the ability of lm cells , thymidine kinase-deficient lm cells ( lmtk- ) , and lmtk- cells transformed to the lmtk+ phenotype by herpes simplex virus type 1 genetic information ( lh7 cells ) to anabolize the acyclovir congener ganciclovir was examined .
C0001367
acyclovir
C0017066
ganciclovir