【名词&注释】
临床表现(clinical manifestation)、微量元素(trace element)、阳性率(positive rate)、自身免疫病(autoimmune disease)、巧克力(chocolate)、巯基乙醇(mercaptoethanol)、鉴别培养基(differential medium)、基础培养基(basal medium)、胰腺癌诊断(diagnosis of pancreatic carcinoma)
[单选题]对胰腺癌诊断(diagnosis of pancreatic carcinoma)最好的指标是( )
A. CA125
B. POA(胰胚胎抗原)和CA199
C. AFP
D. CA50
E. CA153