Abdominal mammary glands were harvested from Plg-RKT+/+
(A,C,E,G) and Plg-RKT−/−
(B,D,F,H) female mice two days postpartum and immunostained with antibodies against collagen IV (A,B), laminin (C,D), smooth muscle actin (E,F) or β1-integrin (G,H). Images were obtained with a Keyence BZ-X700 (magnification X 200). For the expanded areas, magnification X 400.