A.erythrocyte B.Lymphocyte C.neutrophil D.eosinophil E.leucocyte
A.多細胞無脊椎動物 B.無體腔或僅有假體腔 C.無附肢靠肌肉伸縮運動 D.兩側(cè)對稱 E.有外骨路
A.definitive host B.intermediate host C.paratenic host D.reservoir host