脑脓肿病理分期，错误的是（）
A.病灶吸收期
B.急性脑炎期
C.脓腔形成期
D.包膜形成期
E.可分为初期、中期、末期
参考答案：A
不属于血清学分型方法检测的HLA抗原位点是（）
A.HLA-DP
B.HLA-B
C.HLA-DR
D.HLA-DQ
E.HLA-A
Despite their______of interest, Fleming kept trying to develop chemical ______ it would be safe and effective.
A．lack, so as to
B．lacking, so as to
C．lack, so that
D．lacking, so that
