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<div>'''エピトープ''' (epitope) は、[[抗体]]が認識する[[抗原]]の一部分のこと。<br />
抗体は病原微生物や[[高分子]]物質などと結合する際、その全体を認識するわけではなく、抗原の比較的小さな<br />
一部分のみを認識して結合する。この[[抗体結合部分]]を抗原のエピトープと呼ぶ。<br />
エピトープは抗原性のための最小単位である。<br />
[[特定抗原]]の侵入により生成された抗体は,その抗原と同一あるいは類似のエピトープを持つものとしか反応しない。<br />
<br />
通常、複数のエピトープが1つの抗原に含まれており、また[[ハプテン]]はエピトープを1つだけ持っている。エピトープは[[T細胞]][[受容体|レセプター]]に結合する抗原部分を指すこともあり、その場合は特にT細胞エピトープと呼ぶ。エピトープに対応する語として、抗体上の抗原に結合する部分を[[パラトープ]](paratope)と呼ぶ。<br />
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== 関連項目 ==<br />
*[[ミモトープ]]<br />
*[[抗原抗体反応]]<br />
*[[液性免疫]]<br />
*[[タンパク質タグ]]<br />
*[[反応原性]]<br />
<br />
== 参考文献 ==<br />
*鹿江雅光ほか編集 『最新家畜微生物学』 朝倉書店 1998年 ISBN 4254460198 <br />
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{{DEFAULTSORT:えひとふ}}<br />
{{biosci-stub}}<br />
[[Category:免疫学]]<br />
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[[it:Antigene#Epitopo]]</div>27.142.164.155 Warning: Cannot modify header information - headers already sent by (output started at /home/users/1/sub.jp-asate/web/wiki/extensions/HeadScript/HeadScript.php:3) in /home/users/1/sub.jp-asate/web/wiki/includes/WebResponse.php on line 46