問題詳情
19.下列何種白血球是由骨髓系幹細胞（myeloid stem cell）演化而來？
(A)mast cell
(B)null cell
(C)nature killer cell
(D)B cell
參考答案
答案：A
難度：適中0.548287
統計：A(176),B(30),C(38),D(25),E(0)
用户評論
【王念澄】評論
A null cell is a large agranular lymphocyte that is developed inside of bone marrow.