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Body weight of 3-week-old mice. Mixed background (left) and 129SvEV background (right). Black bar, male; white bar, female; WT; wild type, B2H, Bmp2 heterozygous mice, B4H, Bmp4 heterozygous mice, B2HB4H, compound heterozygous mice for Bmp2 and Bmp4. Numbers of animals measured are shown underneath of each bar. B2HB4H mice are smaller in their body weight than other genotype in both sexes (P < 0.0001).
