EOG89W4WF GO:0000242 1/59 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] EOG89W4WF GO:0051297 1/59 centrosome organization biological_process "A process that is carried out at the cellular level which results in the assembly, arrangement of constituent parts, or disassembly of a centrosome, a structure comprised of a pair of centrioles and peri-centriolar material from which a microtubule spindle apparatus is organized." [GOC:ai, GOC:dph, GOC:jl, GOC:mah]