Fig. 3. Type IV collagen α5 chain staining at 21 weeks of age.
Green: Type IV collagen α5 chain. Red: WT1 as a podocyte marker. a Wild-type mouse treated with the vehicle. b Mutant mouse treated with the vehicle. c–f Mutant mouse treated with the antisense oligonucleotide (ASO) (e, f cropped). Type IV collagen α5 chain was completely negative in the vehicle group (b), but was clearly expressed on the tubular basement membrane and even on the glomerular basement membrane (GBM); although, expression was only partial on the GBM (e, f arrows). Scale bars are 100 μm. Two different researchers from different institutes conducted the staining, and the expression pattern was identical.