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The organs of interest were dissected and photographed in situ and ex situ. Fragments were collected and subjected to routine histological processing for inclusion in paraffin, which was cut and stained by haematoxylin and eosin and Gomori's Trichrome methods and subsequently analysed in a light microscope. The results showed that the urinary tract is like that of domestic animals and is composed of smooth unilobed kidneys covered by a dense capsule of connective tissue and divided into two well\u2010defined regions, cortical and medullary. Ureters, urethra and urinary bladder also showed macroscopic and microscopic characteristics similar to those of domestic animals. The penis of these animals has fibroelastic characteristics, with numerous keratinized structures at its apex. In the middle third of the penis, a \u201cU\u201d shaped penile flexure was seen; the glans penis is covered by a keratinized epidermis containing horny spicules. The presence of a penile bone in an endochondral ossification process was observed, being more developed in gestational ages greater than 76\u2009days. The annex glands were not observed, probably because they were fetuses; only the ampulla of the ductus deferens was identified.<\/jats:p>","DOI":"10.1111\/ahe.12955","type":"journal-article","created":{"date-parts":[[2023,8,22]],"date-time":"2023-08-22T09:19:16Z","timestamp":1692695956000},"page":"956-966","update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":1,"title":["Urogenital development and sexual differentiation in males of the species <i>Dasyprocta fuliginosa<\/i>"],"prefix":"10.1111","volume":"52","author":[{"given":"Elisa Carla Barra","family":"Freire","sequence":"first","affiliation":[{"name":"Institute of Health and Animal Production (ISPA) Federal Rural University of the Amazon (UFRA)  Bel\u00e9m Brazil"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"\u00c9rika","family":"Branco","sequence":"additional","affiliation":[{"name":"Postgraduate Program in Animal Health and Production in Amazonia (PPGSPAA) Federal Rural University of the Amazon (UFRA)  Bel\u00e9m Brazil"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Elane Guerreiro","family":"Giese","sequence":"additional","affiliation":[{"name":"Postgraduate Program in Animal Health and Production in Amazonia (PPGSPAA) Federal Rural University of the Amazon (UFRA)  Bel\u00e9m Brazil"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-1406-9979","authenticated-orcid":false,"given":"Frederico Ozanan Barros","family":"Monteiro","sequence":"additional","affiliation":[{"name":"Postgraduate Program in Animal Health and Production in Amazonia (PPGSPAA) Federal Rural University of the Amazon (UFRA)  Bel\u00e9m Brazil"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Pedro","family":"Mayor","sequence":"additional","affiliation":[{"name":"Postgraduate Program in Animal Health and Production in Amazonia (PPGSPAA) Federal Rural University of the Amazon (UFRA)  Bel\u00e9m Brazil"},{"name":"Departament de Sanitat i d'Anatomia Animals, Facultat de Veterin\u00e0ria Universitat Aut\u00f2noma de Barcelona (UAB)  Barcelona Spain"},{"name":"Museo de Culturas Ind\u00edgenas Amaz\u00f3nicas  Iquitos Peru"},{"name":"ComFauna, Comunidad de Manejo de Fauna Silvestre en la Amazon\u00eda y en Latinoam\u00e9rica  Iquitos Peru"},{"name":"Rede de Pesquisa em Diversidade, Conserva\u00e7\u00e3o e Uso da Fauna na Amaz\u00f4nia (REDEFAUNA)  Manaus Brazil"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-5668-7911","authenticated-orcid":false,"given":"Ana Rita","family":"de Lima","sequence":"additional","affiliation":[{"name":"Postgraduate Program in Animal Health and Production in Amazonia (PPGSPAA) Federal Rural University of the Amazon (UFRA)  Bel\u00e9m Brazil"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"311","published-online":{"date-parts":[[2023,8,22]]},"reference":[{"key":"e_1_2_8_2_1","doi-asserted-by":"publisher","DOI":"10.2307\/1375394"},{"key":"e_1_2_8_3_1","doi-asserted-by":"publisher","DOI":"10.1590\/S1413-95962003000900004"},{"issue":"1","key":"e_1_2_8_4_1","first-page":"71","article-title":"Fases do desenvolvimento e diferencia\u00e7\u00e3o testicular em cutias (Dasyprocta aguti) criadas em cativeiros","volume":"40","author":"Assis Neto A. 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