Characterization of the factor in L-cell conditioned medium capable of stimulating colony formation by mouse marrow cells in culture.

Animals Bone Marrow/growth & development Bone Marrow Cells Cell Line Centrifugation, Density Gradient Chromatography, DEAE-Cellulose Chromatography, Gel Chromatography, Ion Exchange Cobalt Isotopes Culture Media/analysis Culture Techniques Glucosamine Glycoproteins/analysis,isolation & purification L Cells/growth & development Methods Mice Molecular Weight Serum Albumin, Bovine Tritium Trypsin Valine

Cobalt Isotopes Culture Media Glycoproteins Tritium Serum Albumin, Bovine Trypsin Valine Glucosamine