(n.) A genus of common motile microorganisms (Spirobacteria) having the form of spiral-shaped filaments. One species is said to be the cause of relapsing fever.
Example Sentences:
(1) The implications of the power calculations for the Berg & Anderson (1973) rotating shaft model are discussed and it is shown that a rotational resistive theory analysis predicts a 5-cross bridge M ring for each flagellum of Spirillum.
(2) and a Spirillum sp., were grown in continuous culture under steady-state conditions in L-lactate-, succinate-, ammonium- or phosphate-limited media.
(3) Spirillum-like MO sometimes penetrate into the parietal cells.
(4) Many of the isolates could not be identified, but the largest single group belonged to the genus Spirillum; other isolates were placed in the genera Leucothrix, Flavobacterium, Cytophaga, and Vibrio.
(5) A freshwater Spirillum sp., which apparently belongs to a niche of low nutritional status (Matin & Veldkamp, 1978), accumulated poly-beta-hydroxybutyric acid (PHB) during lactate-limited growth in continuous culture.
(6) The addition of nitrate to cultures of Spirillum itersonii incubated under low aeration produced a diauxic growth pattern in which the second exponential phase was preceded by the appearance of nitrite in the medium.
(7) Lower rates of C2H2 reduction were associated with control corn cultures which had been treated with autoclaved Spirillum than with cultures inoculated with live Spirillum.
(8) Aquaspirillum (Spirillum) gracile is one of the few spirilla that cause acidification of the medium when cultured with sugars.
(9) The other factors which appear to be involved include a lower energy of maintenance of Spirillum sp.
(10) It is proposed that this bacterium is the human gastric spirillum that in most persons lives in harmony with its natural host, resulting in asymptomatic infection.
(11) The methodology for deoxyribonucleic acid-mediated transformation of Spirillum lipoferum to resistance to various antimicrobial agents is reported.
(12) A mathematical model employing slender body theory is constructed for a unipolar Spirillum volutans cell with the model cell allowed to move unconstrainedly in the fluid.
(13) Very few spiral bacteria, including those of the spirillum type, were seen in the lumen of the large intestine.
(14) The lowest viscosity that immobilized flagellated bacteria such as Psedomonas aeruginosa, Spirillum serpens, and Escherichia coli was 60 centipoise (cp).
(15) This wrinkling effect is believed (on circumstantial evidence) to be caused by the bdellovibrio's disruption of the cell wall lipoprotein of the Spirillum.
(16) The gastric spirillum Helicobacter felis, originally isolated from the cat stomach, colonizes the stomachs of germfree rats.
(17) Sorghum and corn breeding lines were grown in soil in field and greenhouse experiments with and without an inoculum of N2-fixing in Spirillum strains from Brazil.
(18) In Spirillum sp., resistance correlated directly with the PHB content of the culture subjected to starvation, whereas in Pseudomonas sp.
(19) A complex and easily disrupted arrangement of macromolecules was present on the outer (lipopolysaccharide) membrane of the cell wall of Spirillum metamorphum.
(20) That the peptidoglycan backbone remains essentially intact, even after the Spirillum cell has been entered by the Bdellovibrio, is supported by the observation that the soluble amino sugar content of the culture medium, as determined by chemical analysis, does not rise even 5.0 h after the association of the Bdellovibrio with the Spirillum has begun.
Tuft
Definition:
(n.) A collection of small, flexible, or soft things in a knot or bunch; a waving or bending and spreading cluster; as, a tuft of flowers or feathers.
(n.) A cluster; a clump; as, a tuft of plants.
(n.) A nobleman, or person of quality, especially in the English universities; -- so called from the tuft, or gold tassel, on the cap worn by them.
(v. t.) To separate into tufts.
(v. t.) To adorn with tufts or with a tuft.
(v. i.) To grow in, or form, a tuft or tufts.
Example Sentences:
(1) This observation provides corroboration for the identification of the principal CCK-I neuron in the rat olfactory bulb as the centrally projecting middle tufted cell.
(2) The observed damage was similar: a decrease of the total length of the dendritic segments of the apical tuft and the basal arborization.
(3) The cell density in the tufts was 120 and 70 per cent greater than controls in AGN and RPGN, respectively.
(4) Approximately one-fourth of the cells contained cytoplasmic fibrillar bodies and amorphous fibrous tufts around the nuclear envelope.
(5) Stereociliary tufts in the tectorial region differ from those in the free-standing region in several ways.
(6) Severe mesangial insudation of material containing fibrinogen derivatives resulted in segmental tuft necrosis with almost complete replacement and destruction of the mesangial matrix.
(7) The anaxonic granule cell of the olfactory bulb is believed to inhibit mitral and tufted cells through reciprocal dendrodendritic synapses.
(8) Detached ciliary tufts (DCTs) have been observed in sputum, in cervicovaginal smears and, rarely, in fluid from the pouch of Douglas.
(9) Among the 58 Helicobacter-negative cases, similar changes were not observed in the ulcer edges, except for two cases which exhibited some cellular tufts.
(10) Monocytes were the predominant cell type among stained cells in glomerular tufts and crescents.
(11) At least six different cell types are recognizable: (1) nondifferentiated duct cells; (2) cells containing apical secretory granules; (3) goblet cells; the mucosubstances of type 2 and 3 are PAS- and Alcian-blue-positive, also reacting wih methenamine silver; (4) ciliated cells, containing a single cilium with the microtubular pattern 9+2; (5) tuft cells with extremely long and wide microvilli and a pear-shaped cell body; (6) migrating cells, mainly lymphocytes and some assumed eosinophils, showing reaction to Mg++-activated ATPase.
(12) The Tufts Assessment of Motor Performance (TAMP) was administered to 69 children (ages 6-18 years, X = 12.1, SD = 3.9) and 137 adults (ages 19-83 years, X = 46.7, SD = 20.0) with neurological and musculoskeletal impairments.
(13) The funniest hairstyle I’ve ever had The time I tried to give myself a touch-up with clippers and shaved out a whole tuft of hair.
(14) Surface areas of tufts and crescents were separately determined by photographing glomeruli, projecting and tracing outlines of tufts and crescents, and cutting out and weighing the tracings.
(15) S. sanguis I strains adhered better than S. sanguis II strains and peritrichously fibrillar strains generally adhered better than tufted strains.
(16) An adhesion is considered as a nidus for segmental sclerosis; as the adhesion progresses, the related tuft regions turn into sclerosis.
(17) The terminal tuft of the distal phalanx is destroyed by pressure erosion.
(18) That's probably why Tufts has reneged on its agreement with the government on how it plans to deal with sexual assault on campus – administrators know it's unlikely that they'll have their funding pulled as a result of their non-compliance.
(19) They found, in the articulation of the upper limbs, in addition to generic signs of arthrosis, zones of bone reabsorption (vacuoles), especially as regard the wrist and hands, and irregularities of the tufts.
(20) Several stages of collagen assemblies were observed: intracellular packing of SLS-like aggregates surrounded by membrane containing areas with a clathrin coat; fine non cross-striated filaments connecting the cell membrane at 1 pole of the cells and collagen fibrils; tufts of filaments directly linked to collagen fibrils.