from The American Heritage® Dictionary of the English Language, 5th Edition.
- noun A membrane-bound organelle in the cytoplasm of most cells, especially plant cells, containing water and dissolved substances such as salts, sugars, enzymes, and amino acids.
- noun A small extracellular cavity or space within tissues.
from The Century Dictionary.
- noun A minute cell or cavity in the tissue of organisms.
- noun In anatomy, a minute space, vacuity, or interstice of tissue in which lymphatic vessels are supposed to originate.
- noun In zoology, any minute vesicle or vacuity in the tissue of a protozoan, as an amœba.
- noun In botany, a cavity of greater or less size within the protoplasmic mass of active vegetable cells, which is filled with water, or cell-sap as it is called.
from the GNU version of the Collaborative International Dictionary of English.
- noun (Biol.) A small air cell, or globular space, in the interior of organic cells, either containing air, or a pellucid watery liquid, or some special chemical secretions of the cell protoplasm.
- noun (Zoöl.) See under
Contractile, and see Illusts. of Infusoria, and Lobosa.
- noun (Zoöl.) See under
Food, and see Illust.of Infusoria.
from Wiktionary, Creative Commons Attribution/Share-Alike License.
- noun cytology A large
membrane-bound vesiclein a cell's cytoplasm.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- noun a tiny cavity filled with fluid in the cytoplasm of a cell
from The American Heritage® Dictionary of the English Language, 4th Edition
from Wiktionary, Creative Commons Attribution/Share-Alike License
In the higher plants, at least, a nucleus occurs embedded in it; a watery liquid holding salts and saccharine substances in solution fills the space called the vacuole, inclosed by the protoplasm.
The protoplasm is more or less extensively excavated by fluid spaces, vacuoles; one clearer circular space or vacuole, which is invariably present, appears at intervals, enlarges gradually, and then vanishes abruptly, to reappear after a brief interval; this is called the contractile vacuole (c.v.).
As water evaporates out of the cell, the cell draws more water into the vacuole from other cells deeper inside the tree.
But it's a 6-brane vacuole, and at the press of a button, it's a year later.
The 76th amino acid may contribute to the PfCRT's function as a CQR determinant in P. falciparum by virtue of its effect on the CQ transport activity across the food vacuole membrane.
Mutations in the P. falciparum digestive vacuole transmmembrane proteins PfCRT and evidence for their role in cholorquine resistance.
Ciliates have permanent contractile vacuole pathways and pores where amoebas will release them from any point along the surface of its body.
They wrap themselves around the food particle and once enclosed it is embedded within a food vacuole for digestion.
In fact, the parasite itself grabs the drug and concentrates it ten-thousand-fold in its digestive vacuole.
Mutations in the P. falciparum digestive vacuole transmembrane protein PfCRT and evidence for their role in chloroquine resistance.