Histological evaluation of testes from adult mice.

<p>Haematoxylin and eosin staining of <i>Ercc1</i> (A–C), <i>Msh2</i> (E–G) and <i>p53</i> (I–K) testes. Sertoli cell only (SCO) tubules are highlighted with asterisks and gaps in testicular epithelium with arrows in <i>TG-Ercc1</i> −/− (C) and <i>Msh2</i> −/− (G). Bar = 100 µm. Distribution of seminiferous tubule diameters in D) <i>Ercc1</i>, H) <i>Msh2</i> and L) <i>p53</i> lines.