(a.) Pertaining to, or having the character of, an exogen; -- the opposite of endogenous.
(a.) Growing by addition to the exterior.
(a.) Growing from previously ossified parts; -- opposed to autogenous.
Example Sentences:
(1) We have investigated a physiological role of endogenous insulin on exocrine pancreatic secretion stimulated by a liquid meal as well as exogenous secretin and cholecystokinin octapeptide (CCK-8) in conscious rats.
(2) The RNA polymerase activity was tested after the solubilization and chromatographic resolution of the three types of polymerases with exogenous template.
(3) The role of O2 free radicals in the reduction of sarcolemmal Na+-K+-ATPase, which occurs during reperfusion of ischemic heart, was examined in isolated guinea pig heart using exogenous scavengers of O2 radicals and an inhibitor of xanthine oxidase.
(4) Exogenous administration of estrogen alone or combined with progesterone have been associated with increased plasma cortisol levels.
(5) We conclude that both exogenously applied PAF by inhalation and antigen exposure are capable of inducing LAR in sensitized guinea pigs, and thus the priming effect of immunization and PAF may contribute to the development of LAR observed in asthma.
(6) The following model is suggested: exogenous ATP interacts with a membrane receptor in the presence of Ca2+, a cascade of events occurs which mobilizes intracellular calcium, thereby increasing the cytosolic free Ca2+ concentration which consequently opens the calcium-activated K+ channels, which then leads to a change in membrane potential.
(7) Exogenous rIL-2 restored T-cell proliferation only in the salivary gland cultures of this patient.
(8) Insulin incubation of plasma membranes pretreated with protease inhibitors (leupeptin, phenylmethylsulfonylfluoride) or with exogenous trypsin, but not chymotrypsin substrates (esters of arginine and tyrosine) yields an inactive supernatant on PDH.
(9) Furthermore, exogenous IL-1, IL-2, IL-4, interferon-gamma, or a rat Con A supernatant failed to abrogate DFMO inhibition.
(10) The influence of exogenous mitogens (RFG, TGF beta 1 and insulin) and autocrine factor (at different step of purification) on the growth of Morris hepatoma 7777 (MH) cells was estimated by both methods.
(11) However, when beta-xyloside-treated cultures were supplied with exogenous basement membrane, Schwann cells produced numerous myelin segments.
(12) The PC modification was affected by the fatty acid composition of the exogenous PC species.
(13) The influence of exogenous gangliosides on the structure of the viral envelope was studied using fluorescent and photoactivatable phospholipids incorporated into the viral membrane.
(14) Unlike previous studies where constitutive expression of exogenous IL-6 genes resulted in lymphoproliferative disorders characterized by massive plasmacytosis, minimal plasma cell expansion occurred in the MSCV-IL-6 mice during the observation period.
(15) The recovery of the exogenously added LTC4 with eosinophils was greater than 90% in both the presence and the absence of calcium ionophore A23187.
(16) Submaximal contractions of the bronchial muscle evoked by exogenous substance P (2 X 10(-7)M) were less potently inhibited by these drugs than those evoked by exogenous acetylcholine (2 X 10(-6)M).
(17) Thus, microfilariae can not only incorporate exogenous arachidonic acid, as previously demonstrated, but can also synthesize arachidonic acid from exogenous linoleic acid.
(18) The rate of removal of exogenous PGE2 in the hind limb circulation was not influenced by HC, suggesting that the diminution of PG release by HC results from the suppression of PG generation rather than from the enhancement of degradation.
(19) Exogenous activators of PKC stimulate insulin secretion from B cells, but attempts to define a physiological role for PKC by using inhibitors of this enzyme have produced ambiguous results.
(20) Mifepristone is an effective abortifacient in combination with an exogenous prostaglandin but its mechanism of action is unknown.
Organism
Definition:
(n.) Organic structure; organization.
(n.) An organized being; a living body, either vegetable or animal, compozed of different organs or parts with functions which are separate, but mutually dependent, and essential to the life of the individual.
Example Sentences:
(1) The high amino acid levels in the cells suggest that these cells act as inter-organ transporters and reservoirs of amino acids, they have a different role in their handling and metabolism from those of mammals.
(2) These organic compounds were found to be stable on the sorbent tubes for at least seven days.
(3) The main clinical features pertaining to the concept of the "psycho-organic syndrome" (POS) were investigated in a sample of children who suffered from severe craniocerebral trauma.
(4) After 3 and 6 months, blood collected by cardiocentesis using ether anesthesia and then sacrificed to remove CNS and internal organs.
(5) Addition of phospholipase A2 from Vipera russelli venom led to a significant increase in the activity of guanylate cyclase in various rat organs.
(6) For the first time it was organized on the basis of population.
(7) Acceptance of less than ideal donors is ill-advised even though rejection of such donors conflicts with the current shortage of organs.
(8) There is no evidence that health-maintenance organizations reduce admissions in discretionary or "unnecessary" categories; instead, the data suggest lower admission rates across the board.
(9) We conclude that chloramphenicol resistance encoded by Tn1696 is due to a permeability barrier and hypothesize that the gene from P. aeruginosa may share a common ancestral origin with these genes from other gram-negative organisms.
(10) Recovery of CV-3988 from plasma averaged 81.7% for the column procedure and 40% for the organic extraction.
(11) One of the main users is coastal planning organizations and conservation organizations that are working on coral reefs.
(12) Infection with opportunistic organisms, either singly or in combination, is known to occur in immunocompromised patients.
(13) The causative organisms included viruses, fungi, and bacteria of both high and low pathogenicity.
(14) A chronic cannulation procedure is described which allows for sampling vomeronasal organ (VNO) contents repeatedly in freely moving conscious subjects.
(15) Neither Brucella organisms, nor increased numbers of neutrophils could be found in semen samples collected from the experimental animals.
(16) The lineage and clonality of Hodgkin's disease (HD) were investigated by analyzing the organization of the immunoglobulin and T-cell receptor beta-chain (T beta) gene loci in 18 cases of HD, and for comparison, in a panel of 103 cases of B- and T-cell non-Hodgkin's lymphomas (NHLs) and lymphoid leukemias (LLs).
(17) A review is made from literature and an inventory of psychological and organic factors implicated in this pathology.
(18) The authors conclude that H. pylori alone causes little or no effect on an intact gastric mucosa in the rat, that either intact organisms or bacteria-free filtrates cause similar prolongation and delayed healing of pre-existing ulcers with active chronic inflammation, and that the presence of predisposing factors leading to disruption of gastric mucosal integrity may be required for the H. pylori enhancement of inflammation and tissue damage in the stomach.
(19) Data is available to support the early influences of enamel organ epithelium upon a responding mesenchyme in the determination of dental morphogenetic fields (Dryburg, 1967; Miller, 1969).
(20) The four deaths were not related to the injuries of parenchymatous organs.