(1) This work extends the finding of proctolin-like substances to the annelid phylum.
(2) The microsporidia are a group of unusual, obligately parasitic protists that infect a great variety of other eukaryotes, including vertebrates, arthropods, molluscs, annelids, nematodes, cnidaria and even various ciliates, myxosporidia and gregarines.
(3) These annelids which destroy the larval stages of Fasciola hepatica have been observed in the laboratory.
(4) These include insects, chelicerates, most crustaceans, annelids, priapulids, nematodes, and some sipunculids.
(5) Such a pattern of subunit aggregation has not been observed previously in annelid extracellular hemoglobins and chlorocruorins.
(6) This characteristic distribution of the various neuron subgroups and fiber pathways may represent functional circuits within the nervous system of this annelid.
(7) The emonctory structures, functions and stereotype and their component parts are studied in protists, spongia, coelenterata and coelomata: lower worms, annelids, their hyponeurian descendents (arthropods, molluses) and epineurian descedents echinoderms and protochordates (Stomochordata, Tunicata, Cephalochordata).
(8) Only the position of the mitochondria, inserted between nucelus and axoneme, is reminiscent of annelid features.
(9) The amino acid sequences of the two variants (H1a 121 residues and H1b 119 residues) of the sperm-specific histone H1 from the polychaete annelid Platynereis dumerilii have been completely established.
(10) Biochemical assays of adenylate cyclase activity were performed during the early phases of regeneration in Owenia fusiformis (Polychaete Annelid).
(11) The pattern and degree of accumulation was essentially complete within 2 years after the initial operation of the power plant, and persisted throughout the remainder of the study: fishes greater than insects greater than annelids greater than molluscs greater than crustaceans greater than plankton greater than periphyton.
(12) In this paper we described a third type of repeat isolated from the genome of a Polychaete annelid: Owenia fusiformis.
(13) A hypothesis is proposed in order to explain the differences observed between biochemical and present results, which suggest, for the hardening of cements a different chemical mechanism to that suggested by Vovelle in annelid Sabellaria alveolata.
(14) Experiments were conducted to assess the relationship between annelid age and susceptibility of the annelid as an intermediate host for a caryophyllaeid, as well as the effect a mixed-species infection has on rate of metacestode development and parasite mortality.
(15) We conclude that all annelid extracellular haemoglobins and chlorocruorins which have the same dimensions as Lumbricus haemoglobin probably have the same mol.
(16) ht-en protein, an annelid homolog of the Drosophila engrailed protein, is expressed during both early development and neurogenesis in embryos of the leech, Helobdella triserialis.
(17) Dialyzed extracts of one of these annelids, Lanice conchilega, show activity in the retentate after pronase digestion, suggesting that antitumor activity is associated with a nonprotein component of the crude tentacle extract.
(18) The sequences of nine chains of annelid giant hemoglobins were compared separately in the functionally essential central exonic region and structurally essential side exonic regions, and a phylogenetic tree was constructed.
(19) In embryos of the glossiphoniid leech, Helobdella triserialis, as in many annelids, cytoplasmic reorganization prior to first cleavage generates distinct animal and vegetal domains of yolk-deficient cytoplasm, called teloplasm.
(20) A marked increase in the abundance of the annelid Polydora ligni in aquariums containing sand and flowing estuarine water was altered in the presence of the carbamate insecticide Sevin (carbaryl).
Leech
Definition:
(n.) See 2d Leach.
(v. t.) See Leach, v. t.
(n.) The border or edge at the side of a sail.
(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).