a third monoclonal antibody ( clone 122 ) , which has been shown to bind nonviral t antigen , does not react with hela cells infected with nondefective adenovirus type 2 ( ad2 ) -simian virus 40 hybrid viruses ad2+nd1 , ad2+nd2 , or ad2+nd4 .
C0003343
t antigen
C0042776
viruses