further studies in balb/c athymic mice demonstrated that the gg2ee cells were directly tumorigenic since ascites tumors ( gg2ee-v ) that developed expressed the h-2k surface phenotype of the injected gg2ee cells , excluding the possibility that the j2 virus constitutively produced by gg2ee cells caused in vivo transformation and therefore tumors of host cell origin .
C0699040
surface
C0007634
cells