(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).
Septum
Definition:
(n.) A wall separating two cavities; a partition; as, the nasal septum.
(n.) A partition that separates the cells of a fruit.
(n.) One of the radial calcareous plates of a coral.
(n.) One of the transverse partitions dividing the shell of a mollusk, or of a rhizopod, into several chambers. See Illust. under Nautilus.
(n.) One of the transverse partitions dividing the body cavity of an annelid.
Example Sentences:
(1) This paper discusses the typical echocardiographic patterns of a variety of important conditions concerning the mitral valve, the left ventricle, the interatrial and interventricular septum as well as the influence of respiration on the performance of echocardiograms.
(2) It was the purpose of the present study to describe the normal pattern of the growth sites of the nasal septum according to age and sex by histological and microradiographical examination of human autopsy material.
(3) It is proposed that this "zipper-like" mechanism represents the normal cutting process of the septum during cell separation.
(4) Twenty-seven human septums were removed at post mortem, examined macroscopically, sectioned coronally and examined microscopically.
(5) Right ventricular volumes were determined in 12 patients with different levels of right and left ventricular function by magnetic resonance imaging (MRI) using an ECG gated multisection technique in planes perpendicular to the diastolic position of the interventricular septum.
(6) The authors report a case of total bladder duplication by frontal septum.
(7) The right side of the ventricular septum was affected in five instances.
(8) To evaluate interatrial septal motion throughout the cardiac cycle, echocardiograms of the septum were obtained by esophageal echocardiography simultaneously with left and right atrial pressures using Millar's micromanometers in nine subjects with sinus rhythm.
(9) Sepsis-induced pulmonary artery hypertension (SIPAH) causes an increase in right ventricular (RV) afterload, dilatation of the RV, leftward shift of the interventricular septum (IVS), and therefore decreases left ventricular compliance (LVC).
(10) These factors include narrowing of septal arteries and the artery to the atrioventricular node, preservation of fetal anatomy with dispersion in the atrioventricular node and His bundle, fibrosis of the sinus node, clefts in the septum, multiple atrioventricular pathways and massive myocardial infarction.
(11) Overall, these results confirm that the medial septum plays a crucial role in the acquisition of problem solving.
(12) The excellent short-term results favor the continued application of anatomical repair of TGA with intact ventricular septum in infancy.
(13) The chapters deal with general preliminaries and indications for surgery, the selection of bypass material, surgical instruments for coronary opertaions, the methods of extracorporeal circulation, the distal coronary anastomosis, the proximal aortal anastomosis, intraoperative monitoring of results, intra- and postoperative myocardinal infarction, the fate of venous bypass grafts, operative treatment of the ruptured ventricular septum and papillary muscle, and ventricular aneurysmectomy.
(14) Experiments were performed in vitro in the isolated perfused interventricular septum, and preischaemic values were compared with those obtained in right ventricular papillary muscles from the same hearts.
(15) Six had a univentricular heart of left ventricular morphology, three had a single ventricle of right ventricular morphology, one had tricuspid atresia with transposition of the great arteries, one had pulmonary atresia, intact ventricular septum, and hypoplastic right ventricle, and one had corrected transposition with hypoplastic systemic ventricle.
(16) In the first case, characterized by dextrocardia, the interventricular septum was intact, while in the second case with levocardia, a high ventricular septal defect was associated with pulmonary atresia.
(17) Fifty per cent of the children with clefts of the palate and lip had deviated nasal septum producing nasal obstruction.
(18) Current data, obtained from resection of the nasal septum in baboons, indicate that proper coordination of timing and surgical technique can cause arrest of growth in the upper part of the face.
(19) However, 7 hemangiomas had a central linear septum.
(20) In 10 patients earlier electrocardiograms did not show left axis deviation; this feature appeared when the aneurysm of the membranous septum was first seen on the echocardiogram.