title: Q-factor: a serum component required for the appearance of nucleoside Q in tRNA in tissue culture.
mesh_terms: D000653:Amniotic Fluid; D000818:Animals; D001769:Blood; D002417:Cattle; D002460:Cell Line; D003470:Culture Media; D005260:Female; D006151:Guanosine / Q000031:analogs & derivatives*; D012343:RNA, Transfer / Q000096:biosynthesis*
chemical_list: D003470:Culture Media; D006151:Guanosine; D012343:RNA, Transfer