Figure 13
From: Origin of germ cells and formation of new primary follicles in adult human ovaries
Distribution of Thy-1 differentiation protein in the ovarian cortex – an "ovary within the ovary" pattern. Thy-1 dp was strongly expressed by TA fibroblasts (ta), and moderately in the upper (uc) and lower ovarian cortex (Ic) except areas showing an "ovary within the ovary" pattern (ov-in-ov) with virtually no Thy-1 dp immunoexpression except vascular pericytes and smooth muscle cells. These areas characteristically contained primary follicles (arrowhead and upper inset) some of which showed an increase in size accompanied by Thy-1 dp+ pericytes (arrow and lower inset). Hematoxylin counterstain, details in text.