Exocytosis (/ËÉksoÊsaÉªËtoÊsÉªs/[1][2]) is a form of active transport in which a cell transports molecules (such as proteins) out of the cell (exo- + cytosis) by expelling them in an energy-using process.
David Ramsay (April 2, 1749 â May 8, 1815) was an American physician, public official, and historian from Charleston, South Carolina.
David Michael Letterman (born April 12, 1947) is an American former television talk show host, comedian, and producer.