title: Size distribution of poly(A)-containing messenger RNA from free polysomes of HeLa cells.
mesh_terms: D002499:Centrifugation, Density Gradient; D006367:HeLa Cells / Q000032:analysis; D008970:Molecular Weight; D011061:Poly A / Q000032:analysis*; D011132:Polyribosomes / Q000032:analysis*; D012333:RNA, Messenger
chemical_list: D012333:RNA, Messenger; D011061:Poly A