Fig. 4.

Mammary glands from CD24-deficient mice exhibit accelerated ductal branching morphogenesis during puberty. a Whole mounts of no. 4 mammary glands from 6-week-old wild-type (CD24+/+) and CD24-deficient (CD24−/−) mice. b Example of whole mounts of no. 4 mammary glands from wild-type (CD24+/+) and CD24-deficient (CD24−/−) mice that had been pregnant for 10 days. Arrowheads in the higher magnification pictures of the mammary glands from CD24-deficient mice indicate the precocious development of alveoli in comparison to wild-type mice