The left electron microscope image shows "exocytosis." Parts of two nerve ... The right image shows "endocytosis," the recycling of a nerve cell vesicle. The recycled vesicle that is taking ...

By contrast, the bulk of endocytosis is often viewed as a constitutive process that ensures the continuous recycling of membrane components. In a recent paper (Mol. Cell 7, 421–432; 2001 ...