(n.) A serpent or monster in the lake or marsh of Lerna, in the Peloponnesus, represented as having many heads, one of which, when cut off, was immediately succeeded by two others, unless the wound was cauterized. It was slain by Hercules. Hence, a terrible monster.
(n.) Hence: A multifarious evil, or an evil having many sources; not to be overcome by a single effort.
(n.) Any small fresh-water hydroid of the genus Hydra, usually found attached to sticks, stones, etc., by a basal sucker.
(n.) A southern constellation of great length lying southerly from Cancer, Leo, and Virgo.
Example Sentences:
(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.
Polyp
Definition:
(n.) One of the feeding or nutritive zooids of a hydroid or coral.
(n.) One of the Anthozoa.
(n.) Same as Anthozoa. See Anthozoa, Madreporaria, Hydroid.
Example Sentences:
(1) The frequency of gastric malignancies in the families of the women with gastric polyps was higher than in the controls and in men, 6.2, 3.1 and 2.4 percent, respectively (p less than 0.05, and p less than 0.025).
(2) In 20 patients (18.2%), visualization revealed uterine abnormalities, mainly newly added endometrial lesions, i.e., hyperplasia, polyps, endometritis, and synechiae.
(3) In the latter groups, specimens were taken from both polyp tissue and adjacent nasal mucosa.
(4) Age, histological type, number or location of the index diminutive polyps, were not associated with proximal lesions.
(5) In this paper, 5 patients with benign tumor (3 tubular adenoma, 1 leiomyoma and 1 fibroma) and 35 pseudotumor (26 cholesterol polyps and 9 inflammatory polyps) of the gallbladder are presented.
(6) The indication to lipomas removal is based on clinical remarks and differential diagnosis with adenomatous polyps.
(7) Genetic relations of skin tags, colon polyps, and colon cancer are a matter of ongoing research.
(8) Of 14 reported cases of Peutz-Jeghers syndrome associated with intestinal carcinoma, in only two was the tumor shown to originate in the polyp.
(9) Examples include the specific pattern of hypodontia seen before the development of iris dysplasia in Rieger syndrome, and the presence of supernumerary teeth and facial osteomas preceding malignant transformation of intestinal polyps in Gardner syndrome.
(10) All patients with distal polyps detected during flexible sigmoidoscopy underwent colonoscopy.
(11) Findings included squamous epithelium with acute and chronic inflammation, foreign body granuloma and aural polyps.
(12) Nine of these 10 patients had juvenile polyposis defined by the presence of at least three juvenile polyps; and eight of the nine had a family history of juvenile polyps.
(13) Eradication of the pedunculated and narrow-based polyps in stomach was almost totally successful by injection into the base.
(14) Included in the study were 193 small polyps, 0.5 cm in diameter, diagnosed on rectoromanoscopy and removed by mechanical way from 182 patients at the Proctologic Unit of the Department of Gastroenterology.
(15) Despite the fact that this approach has several caveats, consistent results obtained in short-term studies would more readily justify the undertaking of a large-scale, long-term controlled study using colon cancer or adenomatous polyp recurrence as an endpoint.
(16) After the polyp was removed, the cells decreased appreciably in number.
(17) Neoplasia was present in 22% of DPs located less than 60 cm from the anus, 73% of proximally located small polyps, and 32% of all DPs.
(18) Non-neoplastic polyps included 32 inflammatory polyps, 32 metaplastic polyps, 27 juvenile polyps and 17 Peutz-Jeghers type polyps.
(19) Polyps were detected ultrasonographically, but one third of them were overlooked by either cholecystography or CT. Nomenclature, pathological classification and management of the lesions are discussed.
(20) Every second polyp in the same region proved to be adenoma.