41.馬立克病疫苗株中,火雞源性HVT株是屬於下列何種血清型?
(A)Serotype 1
(B)Serotype 2
(C)Serotype 3
(D)Serotype 4
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統計: A(86), B(178), C(819), D(71), E(0) #3279491
統計: A(86), B(178), C(819), D(71), E(0) #3279491