a series of 170 consecutive patients with testicular germ cell tumors ( 88 seminomas and 82 non-seminomas ) had preoperative serum samples and primary tumor tissue examined for the presence of the tumor markers , alphafetoprotein ( afp ) and human chorionic gonadotropin ( hcg ) by immunologic techniques .
C0041365
tumor markers
C0002210
alphafetoprotein