Previous run in ground squirrel brain with P-STAT3 antibody found the same band at ~88 kDa. Verified with a reprobe on the same samples. Also ran a rat brain sample that showed 3 of the bands (88, 57, 37), including the correct one. It is unclear what the identity of the extra bands are.
Lane 1 is rat brain, Lane 2 is ground squirrel brain