part of developmental process involved in reproduction pole cell development pole cell formation biological_process Formation of a small group of cells (pole cells) at the posterior pole of the insect blastula. They are the first cells to cellularize after the arrival of nuclei at the end of the syncytial blastula stage and are the precursors to the insect germ cells. GO:0007279 See also the Cell Ontology term 'pole cell ; CL:0000301'. cellularization