單項(xiàng)選擇題白細(xì)胞減少癥()

A.外周血白細(xì)胞(1.5~4.0)×109/L
B.外周血白細(xì)胞<2.0×109/L
C.中性粒細(xì)胞絕對(duì)值<0.5×109/L
D.中性粒細(xì)胞絕對(duì)值<3.0×109/L
E.外周血白細(xì)胞數(shù)(2.5~4.5)×109/L