Editing Parietal cell (section)

==Structure==
===Canaliculus===
A '''canaliculus''' is an adaptation found on gastric parietal cells.  It is a deep infolding, or little channel, which serves to increase the surface area, e.g. for secretion.  The parietal cell membrane is dynamic; the numbers of canaliculi rise and fall according to secretory need.  This is accomplished by the fusion of canalicular precursors, or '''tubulovesicles''', with the membrane to increase surface area, and the reciprocal endocytosis of the canaliculi (reforming the tubulovesicles) to decrease it.<ref name="Sahoo">{{cite journal |last1=Sahoo |first1=N |last2=Gu |first2=M |last3=Zhang |first3=X |title=Gastric Acid Secretion from Parietal Cells Is Mediated by a Ca(2+) Efflux Channel in the Tubulovesicle. |journal=Developmental Cell |date=8 May 2017 |volume=41 |issue=3 |pages=262–273.e6 |doi=10.1016/j.devcel.2017.04.003 |pmid=28486130|pmc=5497767 }}</ref>