(1) As an extension of the previous study which indicated that mesoglea is a primitive basement membrane which has retained some characteristics of interstitial extracellular matrix, the present study was undertaken to analyze the role of mesoglea components during head regeneration in Hydra vulgaris.
(2) Using serial-sectioning techniques for conventional transmission and high-voltage electron microscopy, we characterized the ultrastructural features and synaptic contacts of the sensory cell in tentacles of Hydra.
(3) The neuron differentiation pathway in hydra is usually assumed to be the following.
(4) The extent of the growth changes in maximal work output during 10 s (MWO10), 30 s (MWO30), and 90 s (MWO90) of maximal repetitive knee flexions and extensions assessed on a modified Hydra-Gym machine was investigated in 84 boys and 83 girls, 9-19 yr of age.
(5) Substance P-like immunoreactivity was found in Hydra attenuata mainly but not exclusively in the nerve and interstitial cells, localized in the cytoplasm and on the cell surface membranes.
(6) Hydrozoans such as Hydra vulgaris, as with all classes of Cnidaria, are characterized by having their body wall organized as an epithelial bilayer with an intervening acellular layer termed the mesoglea.
(7) These results are the first demonstration that the dense-cored vesicles of Hydra neurons contain a neuropeptide.
(8) Nematocyte differentiation from interstitial stem cells in hydra occurs in a highly position-dependent manner along the body axis.
(9) The presence of Arg-Phe-amide (RFamide)-like peptides in dense-cored vesicles in neurons of the peduncle of Hydra was demonstrated by immunogold electron microscopy.
(10) History will judge Syria’s descent into a hydra-headed war as a stain on the world’s conscience.
(11) The multiple manifestations of systemic lupus erythematosus recall the ancient Greek monster the Hydra.
(12) Hydra) has raised some interesting evolutionary questions as to the function of intragranular nucleotides.
(13) Captain America kicking open the door of what looks like a European mountain fortress suggests the Nazi offshoot Hydra might be rearing its many ugly heads once again.
(14) Intact hydra treated for 24 h with oligomycin gradually lose their head structures and the distal ends form feet.
(15) This substance is specific for the foot as evidenced by the following findings: (1) It is present in the animal as a steep gradient descending from foot to head, paralleling the foot-forming potential of the tissue (2) It does not accelerate head regeneration, nor do the head factors of hydra discovered by Schaller (1973) and Berking (1977) accelerate foot regeneration.
(16) This study concerns application of the Hydra attenuata assay to detect the developmental toxicity potential of various aqueous samples.
(17) Feeding behavior in hydra is initiated by the association of glutathione (GSH) with a putative external chemoreceptor.
(18) Because it is self-inflicted, hydra-headed and increasingly beyond our control, both politically and economically, at a time when Britain is losing friends fast by peeing on their chips.
(19) The tentacles in hydra have characteristics of both spacing patterns and number-regulating patterns in that their number under some circumstances changes with the size of the animal and under others does not.
(20) Every epithelial cell is continuously displaced with neurons toward either head or foot in an adult hydra.
Hydrate
Definition:
(n.) A compound formed by the union of water with some other substance, generally forming a neutral body, as certain crystallized salts.
(n.) A substance which does not contain water as such, but has its constituents (hydrogen, oxygen, hydroxyl) so arranged that water may be eliminated; hence, a derivative of, or compound with, hydroxyl; hydroxide; as, ethyl hydrate, or common alcohol; calcium hydrate, or slaked lime.
(v. t.) To form into a hydrate; to combine with water.
Example Sentences:
(1) The radius is estimated to be around 1.7 nm, which shows a moderate degree of hydration.
(2) Over the course of 26-40 h the Na- and water-loaded cells returned to a normal state of hydration as judged by their density.
(3) In the present experiments, single unit recording and microiontophoretic techniques were used to determine the effects of benzodiazepines on DA and non-DA neurons in the VTA of chloral hydrate anesthetized rats.
(4) The effects of clozapine on the spontaneous firing rate of noradrenergic (NE, locus coeruleus), dopaminergic (DA, zona compacta, ventral tegmental area) and non-dopaminergic (zona reticulata) neurons was studied in chloral hydrate anesthetized rats.
(5) We have previously shown that, with moderate hydration (2.5 L) of the recipient, together with rapid infusion of 250 ml of mannitol 20% just before clamp removal, the incidence of ARF decreased to below 10%.
(6) In mixtures of DOMGDG and dioleoyldiglycosyldiglyceride (DODGDG), the formation of an III (or HII) phase is enhanced by DOMGDG and low hydration or high temperatures.
(7) A brevibacterium, strain TH-4, previously isolated by aerobic enrichment on the monocyclic monoterpenoid cis-terpin hydrate as a sole carbon and energy source, was found to grow on alpha-terpineol and on a number of common sugars and organic acids.
(8) The poly(dG-dC) helical duplex forms a modified, B-family structure (B*) at very high hydration and a normal B structure at slightly lower hydration.
(9) True Love Impulse Body Spray, Simple Kind to Skin Hydrating Light Moisturiser and VO5 Styling Mousse Extra Body marked double-digit price rises on average across the four chains.
(10) The effect of rat brain natriuretic peptide (BNP) on drinking behaviour was examined in dehydrated and well-hydrated rats.
(11) The influence of degree of hydration of the monolayers and their spontaneous curvature on conditions of monolayer fusion have been analysed.
(12) More than half of carers said they were neglecting their own diet as a result of their caring responsibilities, while some said they were eating the wrong things because of the stress they are under and more than half said they had experienced problems with diet and hydration.
(13) (2) Highly aneuploid and polyploid types were induced in diploid and haploid germinating conidia by chloral hydrate but not to any significant extent by gamma-rays.
(14) To investigate the physical state of water in hydrating biological macro-molecules, the dielectric properties of water in hen egg lysozyme pellets with various moisture contents were studied using the thermally stimulated depolarisation currents technique.
(15) Respiration frequency increased during exposure to 35 (four birds) and 40 degrees C (six birds) in the normally hydrated quail, while in the dehydrated quail, respiration frequency increased only in three birds during exposure to 35 degrees C, and four birds during exposure to 40 degrees C, the frequencies were lower during dehydration.
(16) When the mice were anesthetized with chloral hydrate prior to preparation of tissue slices, morphine produced a dose-dependent suppression of noradrenergic neuronal activity.
(17) The conformational similarity between tubules, sheets, and the dry powder is corroborated by calorimetry, which reveals a cooling exotherm at the same temperature where tubules form upon cooling hydrated sheets.
(18) Since deglycosylation decreases the frictional ratio of thyroxine binding globulin, it is concluded that, although sialic acid and other sugar residues are in contact with the protein surface, the hydrated carbohydrate chains protrude partially into the solvent.
(19) Our irradiation results are consistent with the hypothesis that the G value for the first 12-15 water molecules of the DNA hydration layer is the same as the G value for the form of DNA to which it is bound (i.e., the pseudo-C or the B form).
(20) The most significant factor affecting the elasticity was the state of hydration of the fascia.