title: Messenger RNA in HeLa cells: an investigation of free and polyribosome-bound cytoplasmic messenger ribonucleoprotein particles by kinetic labelling and electron microscopy.
mesh_terms: D002247:Carbon Isotopes; D002499:Centrifugation, Density Gradient; D003593:Cytoplasm / Q000378:metabolism*; D006367:HeLa Cells; D006801:Humans; D012333:RNA, Messenger
chemical_list: D002247:Carbon Isotopes; D012333:RNA, Messenger