both of these plasmid-encoded proteins constituted 0.1 to 0.3 % of the total cellular protein and were virtually identical to the authentic adenovirus 2 e1a 42- to 50-kd and e1b 53- to 58-kd tumor antigens ( t antigen ) as determined by gel electrophoresis , immunoprecipitation , and tryptic fingerprint analysis .
C0003335
tumor antigens
C0003343
t antigen