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Signal Transduction Growth Factors/Hormones Hormones

Anti-Leptin抗体(ab3583)

  • Datasheet
Reviews (3)Q&A (15)References (33)

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Immunocytochemistry - Anti-Leptin antibody (ab3583)
  • Immunohistochemistry (Frozen sections) - Anti-Leptin antibody (ab3583)
  • Immunocytochemistry - Anti-Leptin antibody (ab3583)
  • Immunocytochemistry - Anti-Leptin antibody (ab3583)
  • Flow Cytometry - Anti-Leptin antibody (ab3583)

Key features and details

  • Rabbit polyclonal to Leptin
  • Suitable for: ICC, IHC-Fr, Flow Cyt
  • Reacts with: Mouse, Sheep, Human
  • Isotype: IgG

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概述

  • 产品名称

    Anti-Leptin抗体
    参阅全部 Leptin 一抗
  • 描述

    兔多克隆抗体to Leptin
  • 宿主

    Rabbit
  • 经测试应用

    适用于: ICC, IHC-Fr, Flow Cytmore details
  • 种属反应性

    与反应: Mouse, Sheep, Human
    预测可用于: Goat, Horse, Chicken, Cow, Cat, Dog, Turkey, Chimpanzee, Rhesus monkey
  • 免疫原

    Synthetic peptide corresponding to Mouse Leptin aa 25-44.
    Sequence:

    QKVQDDTKTLIKTIVTRIND

    Run BLAST with BLAST the sequence with ExPASy Run BLAST with BLAST the sequence with NCBI
  • 阳性对照

    • 购买相配的WB阳性对照Recombinant Human Leptin protein
    • ICC: 3T3-L1, HeLa and mesenchymal stem cells. IHC-P: Sheep brain tissue. Flow Cyt: 3T3-L1 cells.
  • 常规说明

    The Life Science industry has been in the grips of a reproducibility crisis for a number of years. Abcam is leading the way in addressing this with our range of recombinant monoclonal antibodies and knockout edited cell lines for gold-standard validation. Please check that this product meets your needs before purchasing.

    If you have any questions, special requirements or concerns, please send us an inquiry and/or contact our Support team ahead of purchase. Recommended alternatives for this product can be found below, along with publications, customer reviews and Q&As

性能

  • 形式

    Liquid
  • 存放说明

    Shipped at 4°C. Store at +4°C short term (1-2 weeks). Upon delivery aliquot. Store at -20°C or -80°C. Avoid freeze / thaw cycle.
  • 存储溶液

    Preservative: 0.05% Sodium azide
    Constituents: 0.1% BSA, 99% PBS
  • Concentration information loading...
  • 纯度

    Immunogen affinity purified
  • 克隆

    多克隆
  • 同种型

    IgG
  • 研究领域

    • Signal Transduction
    • Growth Factors/Hormones
    • Hormones
    • Neuroscience
    • Neurology process
    • Metabolism
    • Stem Cells
    • Mesenchymal Stem Cells
    • Adipogenesis
    • Cardiovascular
    • Atherosclerosis
    • Diabetes associated
    • Metabolism
    • Types of disease
    • Obesity
    • Metabolism
    • Types of disease
    • Cancer
    • Metabolism
    • Types of disease
    • Heart disease

相关产品

  • Compatible Secondaries

    • Goat Anti-Rabbit IgG H&L (Alexa Fluor® 488) (ab150077)
  • Conjugation kits

    • PE / R-Phycoerythrin Conjugation Kit - Lightning-Link® (ab102918)
    • APC Conjugation Kit - Lightning-Link® (ab201807)
  • Isotype control

    • Rabbit IgG, polyclonal - Isotype Control (ChIP Grade) (ab171870)
  • Positive Controls

    • BALB/3T3 whole cell lysate (ab7901)

应用

The Abpromise guarantee

Abpromise™承诺保证使用ab3583于以下的经测试应用

“应用说明”部分 下显示的仅为推荐的起始稀释度;实际最佳的稀释度/浓度应由使用者检定。

应用 Ab评论 说明
ICC
Use a concentration of 5 µg/ml.
IHC-Fr (1)
1/50 - 1/200.
Flow Cyt
Use 3-5µl for 106 cells.
说明
ICC
Use a concentration of 5 µg/ml.
IHC-Fr
1/50 - 1/200.
Flow Cyt
Use 3-5µl for 106 cells.

靶标

  • 功能

    May function as part of a signaling pathway that acts to regulate the size of the body fat depot. An increase in the level of LEP may act directly or indirectly on the CNS to inhibit food intake and/or regulate energy expenditure as part of a homeostatic mechanism to maintain constancy of the adipose mass.
  • 疾病相关

    Defects in LEP may be a cause of obesity (OBESITY) [MIM:601665]. It is a condition characterized by an increase of body weight beyond the limitation of skeletal and physical requirements, as the result of excessive accumulation of body fat.
  • 序列相似性

    Belongs to the leptin family.
  • 细胞定位

    Secreted.
  • Target information above from: UniProt accession P41159 The UniProt Consortium
    The Universal Protein Resource (UniProt) in 2010
    Nucleic Acids Res. 38:D142-D148 (2010) .

    Information by UniProt
  • 数据库链接

    • Entrez Gene: 493838 Cat
    • Entrez Gene: 373955 Chicken
    • Entrez Gene: 449638 Chimpanzee
    • Entrez Gene: 280836 Cow
    • Entrez Gene: 3952 Human
    • Entrez Gene: 16846 Mouse
    • Entrez Gene: 698728 Rhesus monkey
    • Omim: 164160 Human
    • SwissProt: Q9N2C1 Cat
    • SwissProt: O42164 Chicken
    • SwissProt: O02750 Chimpanzee
    • SwissProt: P50595 Cow
    • SwissProt: Q257X2 Goat
    • SwissProt: Q9TU09 Horse
    • SwissProt: P41159 Human
    • SwissProt: P41160 Mouse
    • SwissProt: Q28504 Rhesus monkey
    • SwissProt: Q28603 Sheep
    • Unigene: 194236 Human
    • Unigene: 277072 Mouse
    see all
  • 别名

    • FLJ94114 antibody
    • LEP antibody
    • LEP_HUMAN antibody
    • LEPD antibody
    • Leptin (murine obesity homolog) antibody
    • Leptin (obesity homolog, mouse) antibody
    • Leptin antibody
    • Leptin Murine Obesity Homolog antibody
    • Leptin Precursor Obesity Factor antibody
    • OB antibody
    • Obese protein antibody
    • Obese, mouse, homolog of antibody
    • Obesity antibody
    • Obesity factor antibody
    • Obesity homolog mouse antibody
    • Obesity Murine Homolog Leptin antibody
    • OBS antibody
    • OTTHUMP00000212285 antibody
    see all

图片

  • Immunocytochemistry - Anti-Leptin antibody (ab3583)
    Immunocytochemistry - Anti-Leptin antibody (ab3583)

    ab3583 staining Leptin in 3T3-L1 cells by ICC (Immunocytochemistry). Cells were fixed with 4% paraformaldehyde, permeabilized with 0.1% Triton X-100 and blocked with 1% BSA for 1 hour at room temperature. Samples were incubated with primary antibody (2ug/ml in 0.1% BSA) for 3 hours at room temperature. An Alexa Fluor® 488-conjugated Goat anti-rabbit IgG (H+L) polyclonal was used as the secondary antibody (1/2000) (Panel a). Nuclei were stained with DAPI (Panel b). F-actin stained with Rhodamine Phalloidin (panel c). Merged images shown in panel d. 

  • Immunohistochemistry (Frozen sections) - Anti-Leptin antibody (ab3583)
    Immunohistochemistry (Frozen sections) - Anti-Leptin antibody (ab3583)

    Immunohistochemical staining of Leptin in Sheep brain using ab3583.

  • Immunocytochemistry - Anti-Leptin antibody (ab3583)
    Immunocytochemistry - Anti-Leptin antibody (ab3583)

    ICC image of ab3583 stained HeLa cells. The cells were 4% formaldehyde fixed (10 min) and then incubated in 1%BSA / 10% normal goat serum / 0.3M glycine in 0.1% PBS-Tween for 1h to permeabilise the cells and block non-specific protein-protein interactions. The cells were then incubated with the antibody (ab3583, 5µg/ml) overnight at +4°C. The secondary antibody (green) was Alexa Fluor® 488 goat anti-rabbit IgG (H+L) used at a 1/1000 dilution for 1h. Alexa Fluor® 594 WGA was used to label plasma membranes (red) at a 1/200 dilution for 1h. DAPI was used to stain the cell nuclei (blue) at a concentration of 1.43µM.

  • Immunocytochemistry - Anti-Leptin antibody (ab3583)
    Immunocytochemistry - Anti-Leptin antibody (ab3583)This image is courtesy of an Abreview submitted by Steven Johnstone

    ab3583 staining Leptin in Human mesenchyml stem cells by ICC (Immunocytochemistry). Cells were fixed with paraformaldehyde and blocked with 10% serum for 30 minutes at 22°C. Samples were incubated with primary antibody (1/100 in 10% horse serum) for 1 hour at 22°C. A FITC-conjugated Mouse anti-rabbit IgG1 monoclonal was used as the secondary antibody (1/100).

    See Abreview

  • Flow Cytometry - Anti-Leptin antibody (ab3583)
    Flow Cytometry - Anti-Leptin antibody (ab3583)

    ab3583 staining Leptin in 3T3-L1 cells by Flow Cytometry. The sample was incubated with the primary antibody (3ug/ml in 2.5% BSA) for 2 hours at room temperature. An Alexa Fluor 488®-conjugated Goat anti-rabbit (1/400) was used as the secondary antibody. Red histogram represents ab3583, pink histogram represents isotype control, purple histogram represents unstained control, green histogram represents no primary antibody control

实验方案

  • Flow cytometry protocols
  • Immunohistochemistry protocols
  • Immunocytochemistry & immunofluorescence protocols
  • Western blot protocols

Click here to view the general protocols

数据表及文件

  • Datasheet download

    Download

文献 (33)

发表研究结果有使用 ab3583?请让我们知道,以便我们可以引用本数据表中的参考文章。

ab3583 被引用在 33 文献中.

  • Zhao S  et al. Gallbladder Cancer Cell-Derived Exosome-Mediated Transfer of Leptin Promotes Cell Invasion and Migration by Modulating STAT3-Mediated M2 Macrophage Polarization. Anal Cell Pathol (Amst) 2022:9994906 (2022). PubMed: 35111566
  • Luo SD  et al. Aberrant miR-874-3p/leptin/EGFR/c-Myc signaling contributes to nasopharyngeal carcinoma pathogenesis. J Exp Clin Cancer Res 41:215 (2022). PubMed: 35778755
  • Gao Y  et al. Presence of leptin and its receptor in the ram reproductive system and in vitro effect of leptin on sperm quality. PeerJ 10:e13982 (2022). PubMed: 36187750
  • Merigo F  et al. Immunolocalization of leptin and leptin receptor in colorectal mucosa of ulcerative colitis, Crohn's disease and control subjects with no inflammatory bowel disease. Cell Tissue Res 383:1103-1122 (2021). PubMed: 33159578
  • Gameiro A  et al. Serum and Tissue Expression Levels of Leptin and Leptin Receptor Are Putative Markers of Specific Feline Mammary Carcinoma Subtypes. Front Vet Sci 8:625147 (2021). PubMed: 33644151
View all Publications for this product

客户评价及客户问答

Show All 评价 Q&A
提交评价 提交问题

1-10 of 18 Abreviews or Q&A

Western blot abreview for Anti-Leptin antibody

Poor
Abreviews
Abreviews
abreview image
Application
Western blot
Sample
Spermophilus tridecemlineatus Tissue lysate - whole (white adipose tissue)
Gel Running Conditions
Reduced Non-Denaturing (Native) (12.5)
Loading amount
20 µg
Specification
white adipose tissue
Blocking step
BSA as blocking agent for 15 hour(s) and 0 minute(s) · Concentration: 3% · Temperature: 4°C
Read More
The reviewer received a reward from Abcam’s Loyalty Program in thanks for submitting this Abreview and for helping the scientific community make better-informed decisions.

Abcam user community

Verified customer

提交于 Feb 05 2014

Immunocytochemistry/ Immunofluorescence abreview for Anti-Leptin antibody

Good
Abreviews
Abreviews
abreview image
Application
Immunocytochemistry/ Immunofluorescence
Sample
Human Cell (Mesenchymal stem cell)
Specification
Mesenchymal stem cell
Fixative
Paraformaldehyde
Permeabilization
No
Blocking step
Serum as blocking agent for 30 minute(s) · Concentration: 10% · Temperature: 22°C
Read More
The reviewer received a reward from Abcam’s Loyalty Program in thanks for submitting this Abreview and for helping the scientific community make better-informed decisions.

MR. Steven Johnstone

Verified customer

提交于 Sep 05 2012

Question


Inquiry: I have got this product (Rabbit polyclonal leptin (ab3583) to detect the level of human Leptin by WB. I need now to use this antibody to block the function of Leptin in human cells. Can I use the same antibody for such purposes?? your help is highly appreciated.

Read More

Abcam community

Verified customer

Asked on Dec 10 2012

Answer

Thank you for contacting us. This antibody has not been tested for blocking functional activity. If you do choose to test it this we way encourage you to submit a review to let us and our customers know whether it worked for you in functional studies.

I hope this information is helpful to you. Please do not hesitate to contact us if you need any more advice or information.

Read More

Abcam Scientific Support

回复于 Dec 10 2012

Question

Dear All,
a customer of our is building a study to compare healty and obese patients.
She is interested in using your ab3583 and ab16227 on human chondrocyte.
Do you have any experitise with those Abs on this specific samples? In particular the customer would like to know if all the leptin is secreted or she can detect the leptin also in cellular lysate (she remove the cell supernatant) with your Abs?

Thanks in advance
and kind regards

Read More

Abcam community

Verified customer

Asked on Jul 09 2012

Answer

Thank you for your enquiry.

I can confirm that ab3583 and ab16227 antibodiesshould detect leptin both intra and extracellularlly.However based on the references for these product it appears that most if not all of the leptin is immediately secreted and would therefore be found extracellularlly.

I am sorry that as far as we are aware, these antibodies have not specifically been tested inchondrocyts.However, I would like to reassure you that our antibodies are tested and covered by our 6 month guarantee in the listed tested applications and species on the individual datasheets.

I hope this information is helpful. If you have any further questions, please do not hesitate to contact us.

Read More

Abcam Scientific Support

回复于 Jul 09 2012

Question

Regarding your answer; i would like to add this comments

1/Lysis buffer. To extract the protein from my tissue; i have used Qproteome kit from Qiagen, protocol for tissue, with protease inhibitors and benzonase nuclease;

2/ Loading amount:
Try to load at least 25-30 ug total tissue lysate per lane onto the gel. I have already load 40ug of total protein. Do you means that i need to load less?

Regards

Read More

Abcam community

Verified customer

Asked on Mar 23 2012

Answer

Thank you for passing some information to me.
I understand that ab3583 has been used previously at 1:4000.
Have you had a chance to test this antibody at dilutions of 1/500 or 1/1000 (for 1 hr at room temperature or overnight at 4oC?
Would you prefer to get a new vial of the primary antibody? Please do let me know how you wish to proceed.
I look forward to hearing from you soon.

Read More

Abcam Scientific Support

回复于 Mar 23 2012

Question

I was not working yesterday and I completely forgot to answer to you.

- species: sheep
- cell or tissue types: cardiac tissue
- lysate (total cell lysates, or cytoplasmic fraction etc): lysate of total protein from sheep cardiac tissue.

Regards

Read More

Abcam community

Verified customer

Asked on Mar 22 2012

Answer

Thank you for getting back to me and for specifying the sample types.
As you have kindly explained to me in your previous e-mail, the primary and the secondary antibodies worked with the positive control but the signal was very weak using lysates from sheep cardiac tissues.
This antibody (ab3583) should recognize sheep Leptin, the cross-reactivity with this species has been tested and confirmed.
After reading through the detailed protocol you kindly forwarded to Abcam, I would like to make the following comments/suggestions:
1) Lysis buffer:
Leptin is secreted so potentially it can be degraded very quickly. It is very important to prepare the samples from fresh tissues and use lysis buffer which contains proteinase inhibitors. The whole process should be carried out on ice. I understand from the initial e-mail that Laemmli buffer was used for lysing the samples. I would rather suggest using RIPA buffer to prevent any unwanted protein degradation in the sheep cardiac tissues. The recipe of RIPA can be found at this website:
https://www.abcam.com/index.html?pageconfig=resource&rid=11379#A1
2) Loading amount:
Try to load at least 25-30 ug total tissue lysate per lane onto the gel.
3) Dilution:
You may need to optimize the dilutions of the primary antibody to find out the most suitable working dilution range for sheep cardiac tissue lysate. Brain tissue has high levels of leptin but cardiac tissue may have significantly lower. I have tried to find some information for you regarding the expressed levels of leptin in sheep tissue, but unfortunately not too much data are available on the public sites compared to human, rat our mouse (i.e. Swiss-Prot, Unigen).
http://www.ncbi.nlm.nih.gov/UniGene/clust.cgi?ORG=Oar&CID=524
http://www.ncbi.nlm.nih.gov/UniGene/ESTProfileViewer.cgi?uglist=Rn.44444
The expression levels of leptin may vary from cell type to cell type or from tissue to tissue. It would be worth testing 1/500 or 1/1000 (for 1 hr at room temperature or overnight at 4oC).
I hope this will be useful for you. Should you still have any problem with this antibody after following these suggestions, then please do not hesitate to contact me again. I would be delighted to help you further.
Have a nice day!

Read More

Abcam Scientific Support

回复于 Mar 22 2012

Question

Here are the order details for these 2 products:





Cat#



Abcam Order Ref#



Abcam Invoice #



Sapphire PO#





ab13987



1036404



1312962



PO-13232





ab97051



975213



1294594-SAP002



PO-12209





Please let me know if you require any other information.

Kind Regards,

Read More

Abcam community

Verified customer

Asked on Mar 21 2012

Answer

Thank you for confirming the order dfetails.
Would you be so kind to clarify what samples you have been using:
- species,
- cell or tissue types,
- lysate (total cell lysates, or cytoplasmic fraction etc)
I look forward to hearing from you soon.

Read More

Abcam Scientific Support

回复于 Mar 21 2012

Question


See below the answer to your question :
Q1: Could you please confirm the batch numbers of ab13987 and ab97051?
ab13987 : GR65976-1
ab97051 : GR44808-2
- Q2: Were these products shipped in the same package?
Yes I think so
- Q3: Could you please provide the Abcam Order Number(s) or your PON?
No we bought them from Sapphirebioscience in Australia, one of my
colleague ordered them, i have not these details.
- Q4: Have you optimized the dilutions of the primary and the
secondary antibody?
I did a dot blot to optimise the secondary dilution because the
recommended dilution of the primary (found in the datasheet) is
1:4000. For this dot blot instead of the 1:4000 dilution, I did a
mistake and use 1:800 dilution. The dot of protein was 300ng, 200 ng,
150ng, 100ng, 75 ng, 50 ng, 25 ng, 12.5ng. For the secondary the
dilution was 1:10000, 1:20000, 1:30000, 1:40000 and 1:50000. After a 2
min exposure, i was able to detect the 12,5 ng of protein with a
secondary dilution of 1:10000 and 1:20000; with the other secondary
dilution, i can detect 25 ng of protein (spot is very light) and 50
ng of protein with the same intensity as the spot obtained with 12,5
ng of protein with a secondary dilution of 1:10000 and 1:20000. Note
that the chemiluminescent detection system used for the dot blot was
more sensitive that the one used for the sensitivity test.
- Q5: Is the HRP still active (ab97051)? Have you used it successfully
with another primary antibody?
I think the antibody is still active because I used it beginning of
march for the dot blot and a week after to do a first western blot
with my protein lysate.
What i have done with this is antibody is:
1- the dot blot as describe above.
2- a western blot with my protein lysate (40ug total protein per lane)
with ab13987 as positive control (300ng), 1:800 dilution for the
primary antibody (I found out my mistake after the incubation),
1:20000 for the secondary (ab97051). I can't detect any band in my
protein lysate but i detected the positive control.
So we decided to do a sensitivity test to know what is the lower
amount of protein that the antibody is able to detect.
3- the sensitivity test
I hope to hear from you soon
Regards

Read More

Abcam community

Verified customer

Asked on Mar 20 2012

Answer

Thank you for your prompt answers. Your co-operation in this matter is highly appreciated.
I understand that you have already carried out some optimization steps and it seems that the primary and the secondary antibodies worked on positive control but the signal was very weak on the samples. Is that correct? Would you be so kind to clarify what samples you have been using:
- species,
- cell or tissue types,
- lysate (total cell lysates, or cytoplasmic fraction etc)
I have forwarded your response to our Australian Distributor (Sapphire) to get some confirmation about the shipment and order details. Could you please laise with them to find out the Abcam Order number?
Once again, thank you for your understanding and co-operation in this matter. I look forward to hearing from you and hope to solve this problem as soon as possible.

Read More

Abcam Scientific Support

回复于 Mar 20 2012

Question

LOT NUMBER GR16544-2 ORDER NUMBER -- NOT SPECIFIED -- DESCRIPTION OF THE PROBLEM No signal or weak signal i did a sensitivity test and i can not detect concentration of leptin <100ng with the antibody SAMPLE recombinant protein ab13987 PRIMARY ANTIBODY ab 3583, dilution 1:4000 in TBST- 5% milk, 1 hour,room temperature Wash step : 4 washing in TBST for 5 min DETECTION METHOD Chemiluminescence : Immunstar HRP chemiluminescent kit from BIORAD Fluorescent ANTIBODY STORAGE CONDITIONS 10ul aliquot, -20C SAMPLE PREPARATION Laemmli buffer 5 min boil AMOUNT OF PROTEIN LOADED 300ng, 100 ng, 30 ng, 10 ng, 3 ng, 1 ng, 0.3 ng, 0.1 ng, 0.03 ng, 0.01 ng ELECTROPHORESIS/GEL CONDITIONS 18% polyacrylamide gel (BIORAD), TGS, 55 min, 200V TRANSFER AND BLOCKING CONDITIONS transfer : nitrocellulose 0.22 um, 30min, tris-glycine + 20% methanol, blocking : TBST 5% non fat dry milk SECONDARY ANTIBODY 1/goat polyclonal secondary antibody to rabbit IgG ab97051, dilution 1:20000 in TBST+5% milk, 1 hour room temperature Wash step :4 washing in TBST for 5 min 2/1:10000 dilution of anti rabbit IgG coupled with 800 nm fluorochrome Wash step :4 washing in TBST for 5 min HOW MANY TIMES HAVE YOU TRIED THE APPLICATION? 1 ADDITIONAL NOTES the results using chemiluminescent or fluorescent are similar

Read More

Abcam community

Verified customer

Asked on Mar 19 2012

Answer

Thank you for enquiry and for taking the time to provide some useful details of the experiments. As I understand three of our products (ab3583, ab13987 and ab97051) have been used in these studies.
Though you have kindly provided some details, it would be much appreciated if I could get some more information which would help me identify the source of the problem.
- Q1: Could you please confirm the batch numbers of ab13987 and ab97051?
- Q2: Were these products shipped in the same package?
- Q3: Could you please provide the Abcam Order Number(s) or your PON?
- Q4: Have you optimized the dilutions of the primary and the secondary antibody?
- Q5: Is the HRP still active (ab97051)? Have you used it successfully with another primary antibody?
Thank you for your understanding and co-operation in this matter. I look forward to hearing from you and hope to solve this problem as soon as possible.

Read More

Abcam Scientific Support

回复于 Mar 19 2012

Question

Dear Sir or Madam,

A customer bought your ab3583

The datasheet/vial states that the vial contains 50 ul, however, only 15ul was actually included, even after a spin.

The vial was not damaged, and the lid was properly fastened.

Please send a replacement vial for this customer.


Have a nice day!



Best regards,

Read More

Abcam community

Verified customer

Asked on Jan 17 2012

Answer

Thank you for contacting us.

I am sorry that the vial you received did not contain the full amount of the product and I apologize for the inconvenience.We will be pleased to issue a free of charge replacement vial. In order to do this, I am forwarding these details on to our distributors team who will be happy to organize this for you.

Thank you for your help and cooperation with this case. Please do not hesitate to contact us if you need anything further.

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Abcam Scientific Support

回复于 Jan 17 2012

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