43.During an infection, B cells divide to form ___________________ that will be ready for the next time the B cells encounter the same microbe. 44.A(n) ____________________ is a disease in which antibodies attack specific cells of the body. 45.The virus that causes AIDS is the _______________ virus. 46.The types of cells that release histamines in an allergic response are __________________. 47.__________ is a type of an allergic response in which the release of histamines triggers breathing passages to become narrow. Â Â
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