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A continuous process is revealed during which segregation of cells occurs from the developing and regressing mesonephros. Additionally, the complementary role of the coelomic epithelium in gonadal ridge and testis formation is demonstrated. The differentiation of testicular cords, their remodelling from a primary reticulum, and the composition and further change of the cellular content during the period after sexual differentiation is described using a computer\u2010aided three\u2010dimensional reconstruction system. Apart from these morphogenetic events, cytodifferentiation in the somatic cells of the indifferent gonad and of the early differentiated testis is demonstrated using indirect immunof luorescence in combination with monoclonal antibodies to the intermediate filament proteins keratin 8 and 18 and vimentin. The immunohistochemical results show that different forms of cytodifferentiation coexist among the somatic cells present in the indifferent gonad and in the testis early after sexual differentiation.<\/jats:p>","DOI":"10.1002\/jemt.1060190203","type":"journal-article","created":{"date-parts":[[2005,2,24]],"date-time":"2005-02-24T08:21:28Z","timestamp":1109233288000},"page":"133-157","source":"Crossref","is-referenced-by-count":41,"title":["Fine structural characteristics of testicular cord formation in the developing rabbit gonad"],"prefix":"10.1002","volume":"19","author":[{"given":"Hubert","family":"Wartenberg","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Inge","family":"Kinsky","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Christoph","family":"Viebahn","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Cordula","family":"Schmolke","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"311","published-online":{"date-parts":[[2005,2,4]]},"reference":[{"key":"e_1_2_1_2_1","doi-asserted-by":"publisher","DOI":"10.1016\/0045-6039(87)90445-3"},{"key":"e_1_2_1_3_1","first-page":"15","article-title":"Initial phases of rat testis differentiation in vitro","volume":"83","author":"Agelopoulou R.","year":"1984","journal-title":"J. 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