Fig. 8. Reduced milk-gene expression in Erbb4Flox/FloxWap-Cre
mice. Northern blot analysis of milk gene expression in biparous control
Erbb4+/+Wap-Cre (lanes 1,2) and
Erbb4Flox/FloxWap-Cre (lanes 3,4) mice at L1. Total
mammary gland RNA was isolated at L1 and subjected to northern blot analysis
using probes specific for the milk genes ß-casein, Wap and
-lactalbumin. A GAPDH probe served as a control for RNA
loading.