Fig. 2. X-Gal stained mammary whole mounts and their histological sections of WAP-Cre/Rosa-lacZ double transgenic females (A-C,G-J) and their single transgenic controls (D-F). (A,D) Whole mount, first pregnancy, day 14 of gestation. (B,E) Whole mount, several hours post partum after the first pregnancy. (C,F) Whole mount, 3 weeks after weaning of the litter following the first gestation cycle. (G,I) Tissue sections from nulliparous (virgin) double transgenic mice counterstained with nuclear Fast Red. (H,J) Tissue sections from parous, non-pregnant (i.e. involuted) double transgenic females counterstained with nuclear Fast Red.
