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Postnatal growth retardation in SERP1−/− mice. A. Survival of neonatal SERP1+/+, SERP1+/−, and SERP1−/− mice. The number of mice at birth was designated as 100 in each group. SERP1−/− mice in a C57BL/6 background have lower viability than SERP1−/− mice in a 129Sv/J × C57BL/6 background. B. Weight gain in neonatal genetically manipulated SERP1 mice of the indicated genotype. C. Representative photograph of SERP1−/− versus SERP1+/+ littermate siblings in the 129Vs/J × C57BL/6 background.
