Figure 1. The 2% agarose gel validates the genotype of Smad3^−/− and Smad3^+/+ mouse strains. A: The band at 364 bp confirms the Smad3^−/− mouse strain in the representative gel image in A1-A4 different mice of Smad3^−/− strain genomic DNA samples. B: The band at 227 bp confirms the Smad3^+/+ mouse strain in the representative gel image in A1-A3 different mice of Smad3^+/+ strain genomic DNA samples. L = 100 bp DNA ladder, bp = base pair.