Rf-1+3+4_b animals excrete higher levels of albumin than Rf-1+4 and Rf-1+3+4_a animals at 9 weeks of age. Number of animals was 9, 13, and 16 for Rf-1 + 4, Rf-1 + 3+4_a, and Rf-1 + 3+4_b, respectively. *P < 0.05; **P < 0.01. Datasets were not normally distributed, so each data point was log transformed before statistical analysis. Statistical comparison was done using a one-way ANOVA followed by a Holm-Sidak post hoc test.