(n.) A physician or surgeon; a professor of the art of healing.
(n.) Any one of numerous genera and species of annulose worms, belonging to the order Hirudinea, or Bdelloidea, esp. those species used in medicine, as Hirudo medicinalis of Europe, and allied species.
(n.) A glass tube of peculiar construction, adapted for drawing blood from a scarified part by means of a vacuum.
(v. t.) To treat as a surgeon; to doctor; as, to leech wounds.
(v. t.) To bleed by the use of leeches.
Example Sentences:
(1) Leech saliva inhibits superoxide production by neutrophils stimulated by tetradecanoyl phorbol acetate or polyhistidine.
(2) We compared the molecular nature of the rat brain opiate receptor with that of the invertebrate leech, Haemopis marmorata, and the protozoan, Tetrahymena, in order to examine the issue of apparent receptor heterogeneity with respect to biochemical structure.
(3) Serotonin plays an obligatory role in the initiation and expression of leech feeding behavior by its differential modulation of central neuronal networks and peripheral glands and muscles.
(4) Leech-treated flaps showed poorer reperfusion than untreated flaps.
(5) Thus, even though normal leech development comprises a nearly invariant cell lineage, lineage relationships are open to considerable reorganization under experimental conditions.
(6) When I first saw the video I instantly recognised something about the voice,” Leech said.
(7) Touch (T) sensory neurons in the leech innervate defined regions of skin and synapse on other neurons, including other T cells, within the ganglionic neuropil.
(8) Sensory processing in the local bending reflex of the leech (Hirudo medicinalis) was studied by examining the input-output relations of the reflex.
(9) Blood meal size increases slightly with leech size: 8.4 g for 1-g leeches and 9.7 g for 2-g leeches.
(10) Leech AP neurons react to axotomy by increasing excitability and resting potential of the cell body membrane.
(11) Antistasin is a 119-amino acid protein initially isolated from salivary glands of the Mexican leech, Haementeria officinalis, that exhibits potent anticoagulant properties resulting from selective inhibition of blood coagulation factor Xa.
(12) Mark Leech, editor of ConVerse , the national newspaper for prisoners, said the former MP should expect "to find himself in a prison reception that is cramped, cold and busy – with up to 200 prisoners being processed each day".
(13) The use of leeches and blood letting of 100 years ago may seem absurd by today's standards.
(14) We were able to record large signals without averaging from barnacle and leech neurons.
(15) There are at least three hirudin transcripts detectable in leech RNAs that are different in size, site of synthesis, inducibility by starvation, and relationship to hirudin activity.
(16) A combined action of acetylcholine and serotonin is demonstrated to produce, in ultrastructure of the Retzius neuron of the leech, changes similar to those resulted from synaptic activation.
(17) The authors conclude that the use of medicinal leeches shows promise as a safe and effective method of providing temporary venous drainage in replanted digits.
(18) The possibility of leech endoparasitism should not be overlooked in people presenting with epistaxis or hemoptysis and a history of recent contact with fresh water lakes or streams in tropical regions.
(19) Individual mechanosensory neurons in the leech segmental ganglia were eliminated in vivo by intracellular Pronase injection.
(20) 3), was developed using the powerful musculature of the common leech (Haemopis sanguisuga).
Parasite
Definition:
(n.) One who frequents the tables of the rich, or who lives at another's expense, and earns his welcome by flattery; a hanger-on; a toady; a sycophant.
(n.) A plant obtaining nourishment immediately from other plants to which it attaches itself, and whose juices it absorbs; -- sometimes, but erroneously, called epiphyte.
(n.) A plant living on or within an animal, and supported at its expense, as many species of fungi of the genus Torrubia.
(n.) An animal which lives during the whole or part of its existence on or in the body of some other animal, feeding upon its food, blood, or tissues, as lice, tapeworms, etc.
(n.) An animal which steals the food of another, as the parasitic jager.
(n.) An animal which habitually uses the nest of another, as the cowbird and the European cuckoo.
Example Sentences:
(1) The rise of malaria despite of control measures involves several factors: the house spraying is no more accepted by a large percentage of house holders and the alternative larviciding has only a limited efficacy; the houses of American Indians have no walls to be sprayed; there is a continuous introduction of parasites by migrants.
(2) However, ticks, which failed to finish their feeding and represent a disproportionately great part of the whole parasite's population, die together with them and the parasitic system quickly restores its stability.
(3) One thousand nineteen Wyoming ground squirrels (Spermophilus elegans elegans) from 4 populations in southern Wyoming were examined for intestinal parasites.
(4) Ten or 4% of the administered parasites passed in the feces during the 3 days following the first or second infection, but 32% after the third infection.
(5) However, the degree of inhibition of parasite replication after exposure to rMu-GM-CSF was not as great as after treatment with rMu-IFN-gamma, and much more rMu-GM-CSF than rMu-IFN-gamma was required to achieve an equivalent antimicrobial effect.
(6) Filipin-induced lesions in glutaraldehyde-fixed parasites indicated higher levels of beta-hydroxysterols in the amastigote than in the promastigote plasma membrane, and in the promastigote flagellar membrane than in the body membrane.
(7) The propionyl-CoA condensing enzyme which catalyzes the first step in the biosynthesis of 2-methylbutyrate and 2-methylvalerate by Ascaris muscle appears to exist in at least three forms in the mitochondria of this parasitic nematode.
(8) The time to recovery of full consciousness, time to parasite clearance, and mortality were examined with Cox proportional-hazards regression analysis.
(9) In addition, a redistribution of cellular controls of the host reaction to parasites may act as a complementary mechanism for establishment of the viable equilibrium between host and parasite.
(10) symptoms, bowel habits, normal physical examination, absence of intestinal infections or parasites) b) physiopathological evaluation (hyperactivity of the distal colon, hypersensitivity to stimuli, stress), and c) physiological evaluation of the patient.
(11) Parasite antigen was present in sera from all infected animals before treatment.
(12) We have found intrathrombocytic parasites of Plasmodium vivax (in 10% of men naturally infected) and P berghei (in 53% of mice experimentally infected); these were both merozoites and trophozoites.
(13) they are shown to inhibit in vitro the release of iron from acidified host cell cytosol, consisting mostly of hemoglobin, a process that could provide this trace element to the parasite.
(14) Phagocytosis of normal or parasitized red cells was not observed.
(15) A radical rearrangement of the organism occurred gradually: initially oval in shape, the parasite became round, then elongated, flattened, and underwent cytokinesis.
(16) The parasites were highly aggregated within the study community, with most people harbouring low burdens while a few individuals harboured very heavy burdens.
(17) Discovery of this vectorhost-parasite system in the Americas, and the localization of promastigote flagellates (leptomonads) in the hindgut of the vector, should assist in clarifying interpretative problems associated with infection of wild-caught flies in studies on leishmaniasis in the Americas and elsewhere.
(18) At the external wall of the host's gut, parasitic cysts of this nematode with immature stages inside were also observed.
(19) All three parasite lines required sialic acid for optimal invasion, but Thai-2 parasites cultured in Tn erythrocytes invaded neuraminidase-treated erythrocytes with 45% efficiency whereas Camp parasites invaded neuraminidase-treated erythrocytes with less than 10% efficiency.
(20) Pretreatment of G6PD(+) cells with ascorbate caused a slight enhancement in parasite development, while in G6PD(-) cells a suppressive effect on the plasmodia was demonstrated.