VDR and breast neoplasm: In comparison to the normal breast tissues, the 1α-hydroxylase/28S rRNA ratio (Fig. 2a) was somewhat lower (1 ± 0.07 versus 0.7 ± 0.05, p < 0.001) and the VDR/28S rRNA ratio (Fig. 2B) somewhat higher (1 ± 0.09 versus 1.4 ± 0.12, p < 0.05) in the breast tumor specimens.