Shown are hematoxylin and eosin-stained ovarian tissue sections (all taken at the same magnification, but higher than that used in Fig. 8) from mature (2-mo) animals that: 1) on the day of birth (d-0) were not (control or CON, left panels) or were treated with DES (right panels) and then were prepubertally (d-21) ovariectomized and received cheek pouch transplants of ovaries from 2) the same (Homo, upper panels) or 3) the other (Cross, lower panels) neonatal treatment group of donor animals (see Table 1 for further transplant group descriptions). Indicated are primary (1°), secondary (2°), tertiary (3°), atretic (At), late antral/preovulatory (LA/PO), and Cystic (Cy) follicles along with oogonial nests (*). Scale bar in lower right panel represents 100 μm.