Genetics of the mammalian phenylalanine hydroxylase system: I. Isolation of phenylalanine hydroxylase-deficient tyrosine auxotrophs from rat hepatoma cells K. H. ChooR. G. H. Cotton OriginalPaper Pages: 457 - 470
Increased polyethylene glycol-mediated fusion competence in mitotic cells of a mouse lymphoid cell line D. HansenJ. Stadler OriginalPaper Pages: 471 - 482
Biochemical genetic analysis of pyrimidine biosynthesis in mammalian cells: I. Isolation of a mutant defective in the early steps of de novo pyrimidine synthesis David PattersonDiane V. Carnright OriginalPaper Pages: 483 - 495
The Control of cell proliferation by preformed purines: A genetic study I. Isolation and preliminary characterization of Chinese hamster lines with single or multiple defects in purine “salvage” pathways Michèlle DebatisseGérard Buttin OriginalPaper Pages: 497 - 511
The control of cell proliferation by preformed purines: A genetic study II. Pleiotropic manifestations and mechanism of a control exerted by adenylic purines on PRPP synthesis Michelle DebatisseGérard Buttin OriginalPaper Pages: 513 - 527
Alternative pathways for proline synthesis in mammalian cells Annette Baich OriginalPaper Pages: 529 - 538
Chromosome loss is responsible for segregation at theHPRT locus in Chinese hamster cell hybrids Sandra A. FarrellRonald G. Worton OriginalPaper Pages: 539 - 551