Figure 5: Illustrative histograms representing changes in PLCζ RNA (arbitrary units) in 8-, 12-, 24-, and 36-week-old testes from (a) both strains collectively, (b) B6 mice, and (c) CD1 mice. Data are represented as the average fold change in PLCζ RNA (normalized with Rps2) ± s.e.m.*Statistically significant differences (P ≤ 0.05). Comparisons made are indicated by the respective line above the bars. B6: C57BL/6 inbred mouse strain; CD1: outbred mouse strain; PLCζ: phospholipase C zeta; Rps2: ribosomal protein S2; s.e.m: standard error of the mean.