Fig. 3: The developing lamb mammary gland exhibits polarity of Ki67 epithelial expression with Ki67 expression focused at the leading edge of the advancing TDLUs.

IHC for Ki67 (a, c) and accompanying Getis-Ord (G-O) statistical analyses (b, d) demonstrating regions with significant spatial congregation of intraepithelial Ki67+ cells (scale (d) parameter = 250 px). Mammary gland from lambs < 2 mo (a, b) and 5-9.5 mo (c, d); mo, months old. a, c Haematoxylin counterstain. Scale bar = 200 μm. b, d Results are representative of three biological repeats.