2007i-487 biography cancer carcinomainsitu chromosomes chromosomestructures congresses cytology diseases epididymis fiction geneexpression germcells immunologicalaspects immunology leydigcells man-womanrelationships molecularbiology molecularendocrinology molelcularaspects musicians orchitis patients physiology qp255 spermatogenesis spermatogenesisinanimals testicularneoplasms tightjunctions ultrastructure wj830c3924 wj830c39351986 wj830l6812007 wj834m7182008