title: Nucleolar RNA synthesis in heterokaryons derived from senescent and pre-senescent human fibroblasts.
mesh_terms: D002466:Cell Nucleolus / Q000378:metabolism*; D002470:Cell Survival; D004261:DNA Replication; D006801:Humans; D006822:Hybrid Cells / Q000378:metabolism*; D007399:Interphase; D012335:RNA, Ribosomal / Q000096:biosynthesis*; D013698:Templates, Genetic; D014158:Transcription, Genetic
chemical_list: D012335:RNA, Ribosomal