(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.
Emissary
Definition:
(n.) An agent employed to advance, in a covert manner, the interests of his employers; one sent out by any power that is at war with another, to create dissatisfaction among the people of the latter.
(a.) Exploring; spying.
(a.) Applied to the veins which pass out of the cranium through apertures in its walls.
Example Sentences:
(1) The drainage blockade is active and located just inside the tunica albuginea at the origin of the emissary veins.
(2) There has been no dialogue between the Chinese government and emissaries of the Dalai Lama since 2010.
(3) Key figures are Frank Lowenstein, Kerry’s special emissary for Middle East peace, and David Makovsky, an expert from the Washington Institute thinktank who specialises in the highly-complex mapping work that will be crucial to any land swaps.
(4) The anatomic connections of the head with the mediastinum through extensions of the deep cervical fascia, and the intracranial venous sinuses connected through emissary veins to the facial veins, make infections of this region the most dreaded.
(5) Brown, meanwhile, was exploring the possibility of sending Brazil's Lula as an emissary to broker an agreement between industrialised economies and the developing world.
(6) On Sunday, after the ninth US circuit court of appeals in San Francisco rejected the government’s application for an emergency stay, Pence was sent as an emissary from the White House to several talkshows.
(7) A small foramen in the squamous part of the occipital bone just behind foramen magnum was noticed for the passage of emissary vein in one skull only, probably connecting occipital sinus with suboccipital venous plexus.
(8) The anatomy of the posterior condylar emissary vein is discussed, and the general evaluation of a patient with objective, pulsatile tinnitus is reviewed.
(9) The "emissary" is situated either along the right or left contour of the base of the common ventricle, its dimensions are variable.
(10) The emissary veins of the islet seem to serve for the quick conveyance of insular secretions into general circulation.
(11) And I thought, that's a good advertisement for death, for the emissary of death.
(12) Even as president Cristina Fernández de Kirchner announced on TV her plan to nationalise Spanish-owned YPF, her emissaries were at the oil company's 35-storey Buenos Aires headquarters giving its Spanish directors 15 minutes to leave the building.
(13) Photograph: EPA Rael – once known as Claude Vorilhon, a French-born amateur sports racer and journalist – changed his name in 1973 after what he says was an encounter with extraterrestrials who declared that he had been chosen as their emissary to deliver a message of joy to humankind.
(14) "The vast lazy planes that floated overhead were emissaries from another world."
(15) Anderson has gone so far as to screen the movie for Tom Cruise, Scientology's chief emissary to the normals.
(16) Sir Denis Wright, an earlier UK ambassador to Iran, was chosen as emissary.
(17) Plain radiographs immediately after perfusion revealed prompt escape of dye into the systemic veins via a number of large transcortical emissary veins.
(18) Athens has set up a crisis management team, sent an emissary to the Middle East, contacted governments across the region and used its considerable contacts with the Syrian opposition in a bid to shed light on the clerics' whereabouts.
(19) Cerebral angiograms showed (1) the occluded confluence sinuum and compensatory venous collaterals, (2) venous drainage through the persistent falcial sinus, which was rare in an adult, from the straight sinus into the superior sagittal sinus (SSS), (3) venous drainage through diploic veins and emissary veins into scalp veins.
(20) In three patients, no blood flow could be detected in the ophthalmic emissary veins whereas in the fourth patient as well as in both control subjects, blood flowed from the intracranium to the face.