title: Chemical studies on ribosomal ribonucleic acid and ribosome formation in HeLa cells.
mesh_terms: D002466:Cell Nucleolus / Q000378:metabolism; D006367:HeLa Cells / Q000378:metabolism; D006801:Humans; D009698:Nucleoproteins / Q000096:biosynthesis; D009841:Oligonucleotides / Q000032:analysis; D010455:Peptides / Q000032:analysis; D012335:RNA, Ribosomal / Q000096:biosynthesis*; D012270:Ribosomes / Q000378:metabolism*
chemical_list: D009698:Nucleoproteins; D009841:Oligonucleotides; D010455:Peptides; D012335:RNA, Ribosomal