murine teratocarcinoma stem cells are nonpermissive for productive infection by a variety of dna ( polyoma and sv40 virus ) and rna ( murine leukemia and sarcoma virus ) tumor viruses whereas differentiated murine cells derived from the stem cells are permissive for productive ( or abortive in the case of sv40 ) infection by these same viruses .
C0009450
infection
C0042769
infection