Growth phenotype according to weaning age. Length and body mass index (BMI) of rats of F1 generation according to weaning age day (d) 16, 21 or 26: Males (A, C) and females (B, D) were measured for crown-tale length (A, B) and weight to give the BMI (g/cm2; C, D) from age d19 to 90. Statistically significant differences between d16 and d26 rats are indicated by (&) for P <0.02, (*) for P <0.001 with a two-way t-test. Mean ± SEM, n = 12 per group.
Crispel et al. BMC Medicine 2013 11:114 doi:10.1186/1741-7015-11-114