EOG8JT2MJ GO:0006364 27/92 rRNA processing biological_process "Any process involved in the conversion of a primary ribosomal RNA (rRNA) transcript into one or more mature rRNA molecules." [GOC:curators] EOG8JT2MJ GO:0030688 27/92 preribosome, small subunit precursor cellular_component "A preribosomal complex consisting of 20S pre-rRNA, ribosomal proteins including late-associating small subunit proteins, and associated proteins; a precursor of the eukaryotic cytoplasmic small ribosomal subunit." [PMID:10567516] EOG8JT2MJ GO:0000022 1/92 mitotic spindle elongation biological_process "The cell cycle process in which the distance is lengthened between poles of the spindle. Spindle elongation begins during prophase and ends during anaphase B." [GOC:mtg_cell_cycle, GOC:vw] EOG8JT2MJ GO:0005634 1/92 nucleus cellular_component "A membrane-bounded organelle of eukaryotic cells in which chromosomes are housed and replicated. In most cells, the nucleus contains all of the cell's chromosomes except the organellar chromosomes, and is the site of RNA synthesis and processing. In some species, or in specialized cell types, RNA metabolism or DNA replication may be absent." [GOC:go_curators]