sv40 u-specific sera from monkeys immunized with ad2 ( + ) nd ( 1 ) -infected cells do not react with sv40 t antigen by immunofluorescence but do react with an antigen in the nucleus of sv40-transformed cells and with an early , cytosine arabinoside-resistant antigen present in the nucleus of sv40-infected cells .
C0007634
cells
C0007610
nucleus of