FIG. 5.

Histology of nipples and mammary glands from LGR7 mothers by using HE staining. Panel a represents results from the wild-type female; panel b represents those from the LGR7^−/− female. The lactating nipple (large arrow) of the wild-type mother (a) was much longer than the nipple (large arrow) of the LGR7^−/− mother (b) that was not able to support suckling. Lactating mammary glands (lobular hyperplasia with prominent secretion, small arrows) in both wild-type and LGR7^−/− mice are also shown.