tokens: Transfection of cDNAs for three mutant enzymes into FPGS-null Chinese hamster ovary cells restored a reduced level of clonal growth , whereas a T339I mutant supported growth at a level comparable to that of the wild-type enzyme .
folded_tokens: transfection of cdna for three mutant enzyme into fpgs-null chinese hamster ovary cell restore a reduce level of clonal growth , whereas a t339us mutant support growth at a level comparable to that of the wild-type enzyme .