(a.) Added extrinsically; not essentially inherent; accidental or causal; additional; supervenient; foreign.
(a.) Out of the proper or usual place; as, adventitious buds or roots.
(a.) Accidentally or sparingly spontaneous in a country or district; not fully naturalized; adventive; -- applied to foreign plants.
(a.) Acquired, as diseases; accidental.
Example Sentences:
(1) Several in vitro transcripts both larger and smaller than the authentic transcript were seen; presumably, these transcripts result from adventitious promoterlike elements in adjacent chlamydial DNA and may be responsible for the expression of the gene in E. coli.
(2) Initial acceleration of the DRL responding appeared to be due to adventitious punishment of collateral behavior which was observed between the bar-presses.
(3) These findings suggest that adventitial mast cells may potentiate atherosclerosis and vasospasm, thrombosis and premature sudden death in long-term cocaine abusers.
(4) By studying the kinetics of urease-catalyzed urea hydrolysis during application of hydrodynamic shear under varying chemical environments, we demonstrate that micromolar quantities of metal ions, in this case adventitious Fe, can accelerate the oxidation of thiol groups on urease and thus inactivate it when the protein is subjected to a shearing stress of order 1.0 Pa.
(5) A marked reduction in the area covered by adventitial cells was recorded coinciding with the early reticulocyte response to phlebotomy.
(6) The use of established genetically engineered cultures in the production of biologicals for human use requires that these cultures be monitored for adventitious viral agents.
(7) 11.30am: Those playing "Leveson bingo" with Robert Jay QC 's florid language might like to note that he has so far used the word "adventitious" .
(8) The extent of marrow sinus wall coverage by perisinal adventitial cells was measured before and after removing 25% of the calculated blood volume in rabbits.
(9) Endothelial damage reduced sensitivity and response asymmetry to luminal and adventitial adenosine.
(10) The invention in 1819 of the stethoscope by Laënnec was followed by the first classification of pulmonary adventitial sounds.
(11) The soaked embryonic shoots formed new apical buds, with or without bud scales, adventitious dwarf needles or shoots, and root- and embryo-like structures.
(12) The histological findings failed to reveal significant differences in either thoracic or abdominal aneurysms with or without marked adventitial fibrosis.
(13) The greatest amount of nerves at all stages of human development occurs in the adventitial plexuses of the thyroid arteries; they are less numerous in the plexus of the splenic artery, and their minimal amount is noted in the plexus of the brachial artery.
(14) In method 2, 72% of the balloon-denuded patent arteries with intact adventitial vasa vasorum were partially re-endothelialized at 4 weeks and 84% at 8 weeks.
(15) This uptake appears to occur primarily in the muscle layers adjacent to the lumen, suggesting that the muscle cells of the luminal side function differently from those from the adventitial side.
(16) Adventitious effects, purposeful lenticular changes and adaptations in response to environmental forces are reviewed as possible sources of this astigmatic variability.
(17) The porphyrins have two important roles in photobiology: in photosynthesis, which has evolved and is highly organized morphologically; and in the photodynamic effect, which is adventitious.
(18) Intimal hyperplasia was observed in both groups, but the grafts in the hypertensive groups showed increased adventitial and medial fibrosis and a reduced number of vasa vasora.
(19) It was found that: the average maximum residual intimal engineering strain in the uncut configuration was -0.082 for all nine aortas and -0.096 and -0.077 for the bovine and porcine aortas alone, respectively; the average maximum residual adventitial strain was 0.085 for all aortas, and 0.102 and 0.078 for the bovine and porcine aortas alone, respectively; an estimated average beneficial compressive stress of -0.188 X 10(5) Pa (corresponding to a strain level of -0.082) is available at the intimal level to counteract the in vivo tensile stress due to the intravascular pressure; an estimated average initial tensile stress of 0.195 X 10(5) Pa (corresponding to a strain level of 0.085) exists at the adventitial level which adds to the in vivo tensile stress due to the intravascular pressure.
(20) Fluorescence histochemistry shows that helicine arteries are provided with an extremely dense network of adrenergic nerves located at the medio-adventitial border.
Nonessential
Definition:
(a.) Not essential.
(n.) A thing not essential.
Example Sentences:
(1) Mg2+ and Ca2+ were found to be nonessential activators.
(2) The data presented suggest that the deletion corresponds to a region on the ICP4 polypeptide that is nonessential for the replication of the virus in vitro.
(3) A paradigm is provided by the disease phenylketonuria in which the homozygote lacks the enzyme for synthesis of the nonessential amino acid tyrosine.
(4) The results prove that part of the intergenic region is nonessential and that the phage can be used as a cloning vehicle.
(5) To that end, we’ve chosen not to add but to minimize, and boldly remove the nonessential “e” from our name.
(6) Our studies also reveal that various T7 strains commonly contain deletions in nonessential regions.
(7) Albumin functions as a nonessential activator, since enzymatic activity was always detectable in its absence.
(8) Marked potentiation of HIV replication was demonstrated with the KOS strain, the ICP0 mutant, and the ICP27 mutant, but not with the ICP4 mutant, indicating that ICP4 is essential and ICP0 and ICP27 are nonessential for this effect.
(9) Plasma total amino acid concentration was significantly lower in the trauma patients because of lower plasma concentrations of the nonessential amino acids.
(10) Our findings suggest that glutamate may be actively synthesized in the developing rat liver mitochondria and then transaminated to other nonessential amino acids for protein synthesis, and that increased intramitochondrial branched-chain amino acid concentrations may enhance glutamate dehydrogenase activity.
(11) A mixture with essential and nonessential amino acids high in branched chain amino acids and low in aromatic amino acids (Fischer solution), and another synthetic mixture of branched chain amino acids containing 3 amino acids associated with the urea cycle (Hep-OU) were infused to control subjects and patients with severe hepatic disease.
(12) Both animals disposed of free or food-derived amino acids more rapidly than could be accounted for by catabolism alone, but the transient increases in turtle plasma concentrations consisted mostly of essential amino acids, whereas the alligator plasma showed little increase in essential amino acids and considerable rises in four nonessential amino acids, glutamine, glutamic acid, glycine and alanine.
(13) Nonessential amino acid concentrations of blood cells were affected little in urea-fed calves; however, blood-cell essential amino acid concentrations were depressed due to significant decreases in threonine, valine, methionine, isoleucine and phenylalanine.
(14) A coherent approach is essential for efficiency of a program and avoidance of costly and nonessential expenditures.
(15) A haploid cpt1 ept1 double null mutant lacked detectable choline- and ethanolaminephosphotransferase activity but was viable for growth, establishing that these enzymes are nonessential.
(16) The size of Tn5353 was minimized by deleting nonessential transposon sequences, making this element small enough to be cloned into phi C31 bacteriophages for efficient transposon delivery to target cells of Streptomyces strains.
(17) Information from the stories was classified as either essential to the plot (Essential proposition) or nonessential to the plot (Detail proposition).
(18) Source of nonessential N (alanine or glycine) in the arginine-deficient diets did not alter orotic acid excretion or plasma or urine ammonia or urea.
(19) The Transportation Security Administration, part of the department of Homeland Security, is expected to furlough certain nonessential employees , but those do not include most screeners.
(20) On the other hand, labeled lysines and tyrosine are nonessential residues.