The decrease of Xenopus egg membrane capacity during activation might be due to endocytosis
Abstract
An endocytotic process in Xenopus eggs was studied by direct visualization of the fluorescent tracer lucifer yellow CH in 1-μm-thick sections. Eggs fixed 3 min after activation show small fluorescent vesicles in the cortex; those fixed after 30 min show mainly large vesicles. This process is related to membrane recycling after cortical granule exocytosis and can account for the observed decrease of the effective membrane capacity.