I. Control of Animal Cell Growth.- Novel Specific Inhibitors for Analysis of Eukaryotic Cell Cycle Control.- II. New Cell Lines.- Transgenic Animals as a Source of Genetically-Engineered Trans-Immortalised Cell Lines.- CD8+ Suppressor T Cell Clone 13G2 Secretes a Suppressive Lymphokine, Immune Suppressive Factor-T (ISF-T).- Development, Availability and Characterization of ATCC Human and Animal Cell Lines.- III. Cell Culture System Including Serum-Free...