F1 antigen

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问题 F1 antigen

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答案A heat labile protein envelope antigen,best formed in cultures incubated at 37℃.It inhibitsphagocytosis and is generally present only in virulentstrains.Tthis plasmid encoded antigen has 1)een consid—ered a virulence determinant but occasional st。rains defi—cient in fractio I antigen.have been isdated from fatal hu—man cases.the antibody t0 this anligen is protective in mice.

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