EOG8B2WC0 GO:0000242 1/85 pericentriolar material cellular_component "A network of small fibers that surrounds the centrioles in cells; contains the microtubule nucleating activity of the centrosome." [GOC:clt, ISBN:0815316194] EOG8B2WC0 GO:0007099 1/85 centriole replication biological_process "The cell cycle process in which a daughter centriole is formed perpendicular to an existing centriole. An immature centriole contains a ninefold radially symmetric array of single microtubules; mature centrioles consist of a radial array of nine microtubule triplets, doublets, or singlets depending upon the species and cell type." [GOC:kmv, ISBN:0815316194]