Fig. 2. No change in calpain 2 in the absence of Foxj1. (A) Western blot of E15.5 lung tissue with primary antibody to calpain 2. Calpain 2 is an 80 kDa protein. Comparison was made to GAPDH (36 kDa) to correct for protein loading. (B,C) Immunohistochemistry of foxj1+/+ (B) and foxj1-/- (C) lung tissue with primary antibody to calpain 2 and peroxidase detection. Scale bar: 5 µm.