Identification of Putative Ortholog Gene Blocks Involved in Gestant and Lactating Mammary Gland Development: A Rodent Cross-Species Microarray Transcriptomics Approach
Figure 1
Histological features of the mammary gland from rats during pregnancy and lactation. Mammary glands were isolated from Sprague Dawley rats in (a, b) a nonpregnant virgin (V) stage; (c, d) day 5 (P5) and (e, f) day 14 (P14) of pregnancy; and (g, h) day 1 (L1) and (i, j) day 12 (L12) of lactation, cryosectioned, and stained with hematoxylin and eosin. Scale bars in (a), (c), (e), (g), and (i) = 50 μm, whereas those in (b), (d), (f), (h), and (j) = 10 μm. Adipose compartment (Ad), lobuloalveolar units (▴), epithelial compartment (Ep), luminal structures (L), and milk globules (↑).