(n.) A genus of herbs with compound white or bluish flowers; starwort; Michaelmas daisy.
(n.) A plant of the genus Callistephus. Many varieties (called China asters, German asters, etc.) are cultivated for their handsome compound flowers.
Example Sentences:
(1) Microscopic examinations of eggs stained with aceto-orcein or the DNA fluorochrome bisbenzimide and direct observations on isolated sperm aster complexes show that halothane induces polyspermy (multiple sperm entry) when present at fertilization.
(2) Second, the bulk of the vegetally located myoplasm moves with the sperm aster towards the future posterior pole, but interestingly about 20% remains behind at the anterior side of the embryo.
(3) The CTR2611 antigen is present in the center of each of these asters.
(4) Cytoplasmic asters were observed at all doses tested.
(5) RNase alters the in vitro assembly of spindle asters in homogenates of meiotically dividing surf clam (Spisula solidissima) oocytes.
(6) ASTER is an integration of the ACQUIRE (AQUatic toxicity Information REtrieval system) and QSAR (Quantitative Structure Activity Relationships) systems.
(7) The data indicate that meiotic spindle assembly is dependent on ongoing protein synthesis in the cumulus-enclosed hamster oocyte; in contrast, chromatin condensation and aster formation are not as sensitive to protein synthesis inhibitors during meiotic resumption.
(8) The eggs of the surf clam Spisula solidissima were artificially activated, homogenized at various times in cold 0.5 M MES buffer, 1mM EGTA at pH 6.5, and microtubule polymerization was induced by raising the temperature to 28 degrees C. In homogenates of unactivated eggs few microtubules form and no asters are observed.
(9) 101:289-316) used computer simulations to show that long-range signals from the asters, varying inversely as various powers of distance, produce summed effects that are minima at the equator of spherical cells.
(10) Microinjection of SPN-3 antibody into taxol-treated mitotic PtK2 cells causes disruption of the asters as judged by tubulin staining of the same cells.
(11) Furthermore, numerous cytoplasmic asters become visible in the cytoplasm.
(12) This is accompanied by the apparent shortening of the microtubules running between the asters.
(13) Mesomere-mesomeres (which divide equally) and macromere-micromeres (which divide unequally) are compared in terms of their asters (both mitotic and so-called interphase asters), spindle apparatus, and contractile ring.
(14) Within 15 min after incubation in D2O, numerous fine centrosomal foci are detected, and they organize a connected network of numerous asters which fill the entire egg.
(15) In the normal two-celled embryos of various pulmonate molluscs, the orientation of spindles characteristic of metaanaphase is being frequently established gradually, in the process of transition from pro- to metaphase accompained by the growth of spindle and asters.
(16) Colcemid-treated prometaphase cells lysed into polymerization-competent tubulin develop large asters in the region of the centrioles and short tubules at kinetochores, making it unlikely that all microtubule formation in lysed cell preparations is dependent on tubulin addition to short tubule fragments.
(17) They located in euchromatin regions of thymus lymphocytes, with a characteristic aster-like immunofluorescence pattern, and on the border of condensed chromatin areas by deposition of immunogold particles in ultrathin sections of thymus.
(18) We conclude first, that centrioles contain RNA which is required for initiation of aster formation, and second, that the centriole activity or ability to assemble a mitotic aster is separable from the basal body activity, or ability to serve directly as a template for microtubule growth.
(19) When injected into fertilized eggs at streak stage, the tubulin was quickly incorporated into each central region of growing asters.
(20) The asters then divide to form a transient tetrapolar figure.
Gaster
Definition:
(v. t.) To gast.
Example Sentences:
(1) When 6-azauracil and 6-azauridine are fed to larvae of the tu(w) rc strain of Drosophila melano-gaster which has the normal wing shape, adults hatch with shortened, obliquely truncated wings.
(2) The effects of famotidine (Gaster; CAS 76824-35-6) and cimetidine on cardiovascular and bronchial functions were investigated in anesthetized dogs.
(3) Resection of gaster with GEA modification that we have called GEA antecolica sine Braun, is the method of choice.
(4) The density of 5-HT immunostaining cells in the digestive tubes were the highest in the pylorus, fundus, cardia of gaster, and moderate in the esophagus and duodenum and the lowest in the large intestine and the small intestine.
(5) The method Billroth II modification GEA in resection of gaster that we have chosen, has given very successful results.
(6) The venom preparation was considerably more effective in inducing histamine release than a body extract derived from gasters, the posterior abdominal segments.
(7) There were decided that only by resection of gaster and seized esophagus i.e.
(8) The advance of this modificate method of resection of gaster takes the patient very soon back to his everyday life.
(9) A simultaneous manometric examination of gaster and LES was carried out during gradual compression of abdominal wall.
(10) This technique is initiated by a special "tandem calling" behavior; the recruiter slants its gaster upward and discharges poison gland secretions from the extruded sting.
(11) These pulses are produced by briefly stopping the gaster during a chirp.
(12) The epithelium at both ends of the canal, i.e., oral cavity and esophagus, and anal canal is a multilayered (20-50 layers) stratified squamous epithelium, whereas that of the rest of the canal, i.e., gaster, small and large intestine and rectum is a single layer of columnar cells.