||Bacteria Escherichia coli
||Pilizota T, Shaevitz JW. Fast, multiphase volume adaptation to hyperosmotic shock by Escherichia coli. PLoS One. 20127(4):e35205 p.2 right column 2nd paragraphPubMed ID22514721
||Researchers calculated the volume in these
different cellular compartments by imaging a cytoplasmicly expressed
fluorescent protein and a fluorescent outer-membrane
dye either simultaneously or individually.
||Based on researchers' measurements,
the periplasm occupies approximately 16% of the total cell volume
and the separation between the inner and outer membranes is
(45±10) nm. For periplasmic volume of 30% see PMID 824274 p.334 left column top paragraph.