Exocytosis

Exocytosis is the reverse of endocytosis.

And that is just as well. In 30 minutes an active cell like a macrophage (right) can endocytose an amount of plasma membrane equal to its complete plasma membrane.

This electron micrograph (courtesy of Dr. Robert J. North) shows a guinea pig phagocyte ingesting polystyrene beads. Several beads are already enclosed in vacuoles while the others are in the process of being engulfed.

So the cell must have a mechanism to restore the normal

Cemeteries are fascinating places. Plots of land where, traditionally, humans bury the dead, they sometimes serve as places that almost exist out of time, preserving a record of the people who lived in the adjoining communities going back to the first settling of the area by humanity.  Often quiet, well-tended but also protected and largely devoid of people, cemeteries sometimes serve as areas that straddle the developed and natural world.  In that capacity, they can be home to a