title: [Bilayer agar cell cultures for studying cellular growth factors].
abstract: The method for biological testing of growth factors (GF) produced by transformed cells is described. The method is suitable for studying the ability of donor cells to release GF that stimulate colony formation of test-cells. Donor cells and test-cells are placed into different semisolid agar layers and separated by intermediate agar layer. The method provides a much more efficient testing of GF biological activity than the use of conditioned cultural fluids of transformed cells. It permits the assessment of GF dialyzation and the role of donor cell proliferation in the production of GF.
authors.forename: E A
authors.initials: EA
authors.lastname: Cherepantseva
authors.forename: V Ia
authors.initials: VIa
authors.lastname: Shevliagin
authors.forename: A D
authors.initials: AD
authors.lastname: Al'tshteĭn
mesh_terms: D000818:Animals; D002471:Cell Transformation, Neoplastic / Q000378:metabolism*; D002478:Cells, Cultured; D006224:Cricetinae; D003470:Culture Media; D006133:Growth Substances / Q000302:isolation & purification / Q000502:physiology*; D066298:In Vitro Techniques; D008647:Mesocricetus; D010455:Peptides / Q000302:isolation & purification / Q000502:physiology*; D015291:Transforming Growth Factors; D014410:Tumor Stem Cell Assay
chemical_list: D003470:Culture Media; D006133:Growth Substances; D010455:Peptides; D015291:Transforming Growth Factors
vernacular_title: Metod dvusloĭnykh agarovykh kul'tur kletok dlia izucheniia kletochnykh faktorov rosta.