part of start stage end stage ovarian follicle micropylar cell CL:0007022 2009-08-10T06:26:10Z Ceri TAO:0005239 ZFA:0005239 Is a specialized pore forming cell of the follicle, located adjacent to the animal pole of the oocyte. The micropylar cell makes the single micropyle (pore) through the chorion through which the sperm fertilizes the egg. plug cell zebrafish_anatomy cell juvenile:days 45-89 adult