{"created":"2021-03-01T06:13:26.219161+00:00","id":10556,"links":{},"metadata":{"_buckets":{"deposit":"f93fbe55-d7e3-4dce-a0c0-ee8e04201fc2"},"_deposit":{"id":"10556","owners":[],"pid":{"revision_id":0,"type":"depid","value":"10556"},"status":"published"},"_oai":{"id":"oai:soar-ir.repo.nii.ac.jp:00010556","sets":["1016:1018:1019:1034"]},"author_link":["33376","33377","33378","33379","33380","33381","33382"],"item_1628147817048":{"attribute_name":"出版タイプ","attribute_value_mlt":[{"subitem_version_resource":"http://purl.org/coar/version/c_970fb48d4fbd8a85","subitem_version_type":"VoR"}]},"item_6_biblio_info_6":{"attribute_name":"書誌情報","attribute_value_mlt":[{"bibliographicIssueDates":{"bibliographicIssueDate":"2001-03-16","bibliographicIssueDateType":"Issued"},"bibliographicIssueNumber":"2","bibliographicPageEnd":"135","bibliographicPageStart":"127","bibliographicVolumeNumber":"37","bibliographic_titles":[{"bibliographic_title":"信州大学農学部紀要"}]}]},"item_6_description_20":{"attribute_name":"抄録","attribute_value_mlt":[{"subitem_description":"黒毛和種雄ウシの精巣を生後１～４および８ケ月に採取し，ブアン固定，パラフィン切片作製後，ヘマトキシリン・エオシン染色した。精巣重量および精細管の大きさとともに精細管におけるセルトリ細胞と生殖細胞の形態および分布に関して月齢の進行にともなう変化を調べた。１ケ月齢の精巣に占める精細管の割合は23％であった。１，２ケ月齢の精細管にはセルトリ細胞と胚芽細胞のみ存在した。３ケ月齢の精細管には胚芽細胞，精祖細胞および精母細胞が観察され，生殖細胞に占める割合は52.8，38.9，8.3％であった。４ケ月齢における精巣重量は１ケ月齢の10倍に増加した。精細管に占めるセルトリ細胞の割合は93.5％であった。４ケ月齢の精細管には胚芽細胞，精祖細胞と精母細胞が観察され，生殖細胞に占める割合は3.4，88，8.6％であった。８ケ月齢における精巣重量は１ケ月齢の約34倍であった。精巣に占める精細管の割合は53％に増加した。精細管に占めるセルトリ細胞の割合は36.3％に低下した。８ケ月齢の精細管には胚芽細胞は観察されなかった。８ケ月齢において精祖細胞，精母細胞，精子細胞および精子が生殖細胞に占める割合は12.9，41.6，36.3，9.2％であった。精子は８ケ月齢の精巣上体に存在した。本研究では３ケ月齢の黒毛和種雄ウシにおける胚芽細胞から精祖細胞への分化，３～８ケ月齢における精子発生，８ケ月齢における精子の管腔への放出と精巣上体への移動の開始を確認できた。黒毛和種雄ウシはホルスタイン種とほぼ同時期かあるいはやや早期に精子形成を開始することが示唆された。","subitem_description_language":"ja","subitem_description_type":"Abstract"}]},"item_6_description_30":{"attribute_name":"資源タイプ（コンテンツの種類）","attribute_value_mlt":[{"subitem_description":"Article","subitem_description_type":"Other"}]},"item_6_description_5":{"attribute_name":"引用","attribute_value_mlt":[{"subitem_description":"信州大学農学部紀要. 37(2): 127-135 (2001)","subitem_description_type":"Other"}]},"item_6_publisher_4":{"attribute_name":"出版者","attribute_value_mlt":[{"subitem_publisher":"信州大学農学部"}]},"item_6_source_id_35":{"attribute_name":"ISSN","attribute_value_mlt":[{"subitem_source_identifier":"0583-0621","subitem_source_identifier_type":"ISSN"}]},"item_6_source_id_40":{"attribute_name":"書誌レコードID","attribute_value_mlt":[{"subitem_source_identifier":"AN00121352","subitem_source_identifier_type":"NCID"}]},"item_creator":{"attribute_name":"著者","attribute_type":"creator","attribute_value_mlt":[{"creatorNames":[{"creatorName":"濵野,  光市"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"徳田,  陽子"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"大島,  浩二"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"河人,  亜紀"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"北村,  圭"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"齋藤,  治"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"有馬,  博"}],"nameIdentifiers":[{}]}]},"item_files":{"attribute_name":"ファイル情報","attribute_type":"file","attribute_value_mlt":[{"accessrole":"open_date","date":[{"dateType":"Available","dateValue":"2015-09-25"}],"displaytype":"detail","filename":"v37n02_04.pdf","filesize":[{"value":"16.4 MB"}],"format":"application/pdf","licensetype":"license_note","mimetype":"application/pdf","url":{"label":"v37n02_04.pdf","url":"https://soar-ir.repo.nii.ac.jp/record/10556/files/v37n02_04.pdf"},"version_id":"c697b54f-a710-4092-a914-58f04ab3f1db"}]},"item_keyword":{"attribute_name":"キーワード","attribute_value_mlt":[{"subitem_subject":"黒毛和種雄ウシ","subitem_subject_scheme":"Other"},{"subitem_subject":"精子形成","subitem_subject_scheme":"Other"},{"subitem_subject":"精巣","subitem_subject_scheme":"Other"},{"subitem_subject":"精巣細胞","subitem_subject_scheme":"Other"},{"subitem_subject":"春機発動","subitem_subject_scheme":"Other"}]},"item_language":{"attribute_name":"言語","attribute_value_mlt":[{"subitem_language":"jpn"}]},"item_resource_type":{"attribute_name":"資源タイプ","attribute_value_mlt":[{"resourcetype":"journal article","resourceuri":"http://purl.org/coar/resource_type/c_6501"}]},"item_title":"黒毛和種幼若雄ウシにおける精巣細胞の分化に関する組織学的研究","item_titles":{"attribute_name":"タイトル","attribute_value_mlt":[{"subitem_title":"黒毛和種幼若雄ウシにおける精巣細胞の分化に関する組織学的研究","subitem_title_language":"ja"},{"subitem_title":"Histological study of differentiation of testicular cells in young Japanese black bulls","subitem_title_language":"en"}]},"item_type_id":"6","owner":"1","path":["1034"],"pubdate":{"attribute_name":"PubDate","attribute_value":"2008-01-17"},"publish_date":"2008-01-17","publish_status":"0","recid":"10556","relation_version_is_last":true,"title":["黒毛和種幼若雄ウシにおける精巣細胞の分化に関する組織学的研究"],"weko_creator_id":"1","weko_shared_id":-1},"updated":"2023-01-06T04:35:02.251229+00:00"}