Effects of Parity and Serum Prolactin Levels on the Incidence and Regression of DMBA-Induced Tumors in OFA hr/hr Rats

Figure 4

Expression of mRNA for hormones receptors in mammary glands from DMBA-treated rats at the end of the experiment. (a) Expression of mRNA for PRLR relative to β-actin. ^∗∗𝑃<0.01 with respect to the corresponding tumor-free group. (b) Expression of mRNA for ERα and β relative to β-actin. ^∗𝑃<0.05, ^∗∗𝑃<0.01, ^∗∗∗𝑃<0.0001 with respect to the corresponding tumor-free groups. Comparisons were performed by ANOVA I.

(a)

(b)