Apoptotic somatic cells in ovarian connective tissues.

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Apoptotic somatic cells in ovarian connective tissues. Apoptotic somatic cells in ovarian connective tissues. Ovarian sections were made at 23 (A,B), 25 (C,D), 40 (E,F) and 70 (G,H) days post-hatching. Apoptotic cells were detected by TUNEL staining (B,D,F,H) and were counterstained with haematoxylin and eosin (A,C,E,G). Large numbers of TUNEL-positive somatic cells (black and white arrowheads) were detected in the ovarian connective tissue of genetic all-females from 23 to 50 days post-hatching. ca, cortical alveolar oocyte; oc, ovarian cavity; og, oogonia; po, perinucleolar oocyte; sc, somatic cell. Scale bars, 20 μm. Daisuke Uchida et al. J Exp Biol 2002;205:711-718 © The Company of Biologists Limited 2002