(a.) Acting; -- opposed to patient, or sustaining, action.
(n.) One who exerts power, or has the power to act; an actor.
(n.) One who acts for, or in the place of, another, by authority from him; one intrusted with the business of another; a substitute; a deputy; a factor.
(n.) An active power or cause; that which has the power to produce an effect; as, a physical, chemical, or medicinal agent; as, heat is a powerful agent.
Example Sentences:
(1) Combinations of maximum amounts of glucagon and the cyclic nucleotide did not produce a greater effect than either agent alone.
(2) Assessment of the likelihood of replication in humans has included in vitro exposure of human cells to the potential pesticidal agent.
(3) In addition, intravenous injection of complexes into rabbits showed optimal myocardial images with agents of intermediate lipophilicity.
(4) This study examined the [3H]5-HT-releasing properties of 3,4-methylenedioxymethamphetamine (MDMA) and related agents, all of which cause significant release of [3H]5-HT from rat brain synaptosomes.
(5) The quaternary structure of ribonucleotide reductase of Escherichia coli was investigated, with the use of purified B1 and B2 proteins and bifunctional cross-linking agents.
(6) Rapid overgrowth of all cultures with the E. coli necessitated the use of selective media containing antimicrobial agents to which the E. coli was sensitive.
(7) These membrane perturbation effects not observed with bleomycin-iron in the presence of a hydroxyl radical scavenger, dimethyl thiourea, or a chelating agent, desferrioxamine, were correlated with the ability of the complex to generate highly reactive oxygen species.
(8) of PLA2 caused marked degranulation of mast cells in the rat mesentery which was facilitated by addition of calcium ion (10 mM) but antagonized by pretreating with three antiinflammatory agents.
(9) We report a series of experiments designed to determine if agents and conditions that have been reported to alter sodium reabsorption, Na-K-ATPase activity or cellular structure in the rat distal nephron might also regulate the density or affinity of binding of 3H-metolazone to the putative thiazide receptor in the distal nephron.
(10) Acquired drug resistance to INH, RMP, and EMB can be demonstrated in M. kansasii, and SMX in combination with other agents chosen on the basis of MIC determinations are effective in the treatment of disease caused by RMP-resistant M. kansasii.
(11) The secondary leukemia that occurred in these patients could be distinguished from the secondary leukemia that occurs after treatment with alkylating agents by the following: a shorter latency period; a predominance of monocytic or myelomonocytic features; and frequent cytogenetic abnormalities involving 11q23.
(12) The agent present in the serum which causes dissolution of the fibrin clot was isolated and identified as pepsinogen.
(13) The active agents modestly improved treadmill exercise duration time until 1 mm ST segment depression (3%), and only propranolol and diltiazem had significant effects.
(14) Maximal covalent binding of [4,5-14C]ronidazole to DNA also required four-electron reduction, consistent with previous studies of the covalent binding of this agent to immobilized sulfhydryl groups [Kedderis et al.
(15) Since interferon alfa-2b (Intron A) is useful as a single agent, it is important to determine if interferon can be combined with standard chemotherapy to improve both response and survival in patients with cancer.
(16) Median effect analysis was applied for the evaluation of in vitro effect by the growth inhibition, and the in vivo effect by comparison of the increase of life span (ILS) in a combined group with the sum of ILS's in 2 single agent groups.
(17) Noradrenaline (NA) was released from sympathetic nerve endings in the tissue by electrical stimulation of the mesenteric nerves or by the indirect sympathomimetic agent tyramine.
(18) Helsby, who joined the estate agent in 1980, saw his basic salary unchanged at £225,000, but gains a £610,000 windfall in shares, available from May, as well as a £363,000 increase in cash and shares under the company profits-sharing scheme.
(19) Combining maximally effective concentrations of each of these stimulating agents produces an additive increase in both the level of 32P incorporation into tyrosine hydroxylase and the degree of activation of the enzyme.
(20) The review provides an update of drug-induced pulmonary disorders, focusing on newer agents whose effects on the lung have been studied recently.
Intensifier
Definition:
(n.) One who or that which intensifies or strengthens; in photography, an agent used to intensify the lights or shadows of a picture.
Example Sentences:
(1) The discussion on topics like post-schooling and rehabilitation of motorists has intensified the contacts between advocates of traffic law and traffic psychologists in the last years.
(2) Another important factor, however, seems to be that patients, their families, doctors and employers estimate capacity of performance on account of the specific illness, thus calling for intensified efforts toward rehabilitation.
(3) Hyperimmunization with the tick encephalitis and Western horse encephalomyelitis viruses reproduced in the brain of albino mice, intensified the protein synthesis in the splenic tissue during the productive phase of the immunogenesis (the 7th day).
(4) First, SDS polyacrylamide gel electrophoresis revealed an intensified hepatic microsomal polypeptide (MW 54,000) following picloram pretreatment.
(5) This effect could be intensified by a preceding treatment of the animal with androgens.
(6) In a recent study, Orr and Lanzetta (1984) showed that the excitatory properties of fear facial expressions previously described (Lanzetta & Orr, 1981; Orr & Lanzetta, 1980) do not depend on associative mechanisms; even in the absence of reinforcement, fear faces intensify the emotional reaction to a previously conditioned stimulus and disrupt extinction of an acquired fear response.
(7) This thread ran through his later writings, which focused particularly on questions of the transformation of work and working time, envisaging the possibility that the productivity gains made possible by capitalism could be used to enhance individual and social life, rather than intensifying ruthless economic competition and social division.
(8) Besides, the movement of mitochondria to the neuronal processes is intensified.
(9) President Mahmoud Ahmadinejad's government has joined MPs, bloggers and local media in denouncing the newly-released Warner Brothers epic, 300, as a calculated attempt to demonise Iran at a time of intensifying US pressure over the country's nuclear programme.
(10) And stopping them means taking action in Syria, because it is Raqqa that is their headquarters .” Isis digging in amid intensified airstrikes in Raqqa, say activists Read more He added: “We shouldn’t be content with outsourcing our security to our allies.
(11) Families fear that after April’s disaster the cycle of poverty in the region will be intensified.
(12) These data indicate the existence of diverse, proinflammatory interactions of pyocyanin and 1-hp with human phagocytes, which may intensify neutrophil-mediated tissue damage during P. aeruginosa infections.
(13) Under identical conditions methandrostenon intensified the proteins synthesis in the nuclear fraction of the liver alone.
(14) The resolution also opens the door for other bodies, such as the European Union and the International Criminal Court, to intensify their pressure on Israel to desist from its illegal practices on the West Bank and its war crimes in Gaza.
(15) In this state, IPPV did not reduce the blood pressure in the supine position, and did not intensify its fall when the upper body was raised.
(16) After 10 months exposure to Fenthion, cellular necrosis and gliosis intensified in the CA4 and CA3 regions and occasionally involved the CA2.
(17) So far 34 patients in complete remission have been given one or two courses of the intensified consolidation therapy with high-dose cytosine-arabinoside and daunorubicin.
(18) The long-running dispute over the Senkaku islands – known as the Diaoyu in China – intensified earlier this month after Japan nationalised the territories, resulting in violent anti-Japanese demonstrations in dozens of Chinese cities.
(19) Two sets of a twin-focus X-ray tube and a 12-inch image intensifier (II) were mounted on the gantry in the isocentric and cross-firing positions.
(20) Elsewhere in the brain, minimal involvement of the entorhinal cortex neurons occurred 3 days postexposure and intensified by 7 days.