(n.) A limbless amphibian belonging to the order Caeciliae or Ophimorpha. See Ophiomorpha.
Example Sentences:
(1) Fine structural and enzyme histochemical observations on ultimobranchial body and parathyroid gland of the caecilian Chthonerpeton are presented.
(2) Cutaneous granular glands are a shared character of adult amphibians, including caecilians, and are thought to be the source of most biologically active compounds in amphibian skin.
(3) In the brain of the Caecilian species Chthonerpeton indistinctum the following enzymes have been demonstrated by means of histochemical techniques: acid phosphatase, alpha-naphthylacetate esterase, acetylcholin esterase.
(4) A crossed rubrospinal tract occurs in anurans, limbed urodeles and reptiles, birds and mammals, but is apparently absent in boid snakes, caecilians and sharks.
(5) The innervation of the musculature of the tongue and the hyobranchial apparatus of caecilians has long been assumed to be simple and to exhibit little interspecific variation.
(6) The ultrastructure of the distal nephron, the collecting duct and the Wolffian duct was studied in a South American caecilian, Typhlonectes compressicaudus (Amphibia, Gymnophiona) by transmission and scanning electron microscopy (TEM, SEM).
(7) Precocious ossification of these and other jaw elements is an evolutionarily derived feature not found in metamorphosing anurans, but shared with some direct-developing caecilians.
(8) Probably in all caecilians, spinal nerves 1 and 2 contribute to the hypoglossal.
(9) Fifteen restriction sites were mapped to the 28S ribosomal RNA gene of individuals representing 54 species of frogs, two species of salamanders, a caecilian, and a lungfish.
(10) The results are in general agreement with previous reports on other caecilian species.
(11) The paraventricular organ is not differentiated in the lungfish (Lepidosiren) and the caecilian (Typhlonectes).
(12) The ultrastructure of the renal corpuscle, the neck segment, the proximal tubule and the intermediate segment of the kidney of a South American caecilian, Typhlonectes compressicaudus (Amphibia, Gymnophiona) was examined by means of transmission electron microscopy (TEM), scanning electron microscopy (SEM) and freeze-fracture technique.
(13) A study of the ear and its responses to acoustic stimuli was carried out in two caecilian species, Geotrypetes seraphini and Dermophis mexicanus.
(14) Whereas Salamandra salamandra possesses a rubrospinal tract, it is absent in the limbless caecilian Ichthyophis kohtaoensis.
(15) A study of 14 genera representing all six families of caecilians demonstrates that general patterns of innervation by the trigeminal, facial, glossopharyngeal, and vagus nerves are similar across taxa but that the composition of the "hypoglossal" nerve is highly variable.
(16) Of particularly high activity are: the motor neurons in the tegmentum, the nucleus mesencephali trigemini, individual large neurons in the marginal zone of the grey matter of the telencephalon, which seems to be a special character of the Caecilians among the Amphibia.
(17) The structure of the ear is examined in two species of caecilians, Ichthyophis glutinosus and I. orthoplicatus, and the sensitivity to aerial sounds is assessed in terms of the electrical potentials of the cochlea.
(18) The presence of nucleus ruber in urodeles and caecilians (amphibia) was investigated.
(19) These patterns, the lengths of fusion of the contributing elements, and the branching patterns of the hypoglossal are assessed according to the currently accepted hypothesis of phylogenetic relationships of caecilians, and of amphibians.
(20) The pituitary glands of two urodelan species (Mertensiella caucasica, Triturus cristatus) and one one caecilian species (Chthonerpeton indistinctum) were examined with histological (Alcian blue, Brookes' trichrome stain), enzyme histochemical (acid phosphatase, alpha-naphthylacetate-esterase, acetylcholinesterase) and immunofluorescence techniques (anti-carp GTH, anti-ovine prolactin, anti-synthetic alpha-MSH).
Earthworm
Definition:
(n.) Any worm of the genus Lumbricus and allied genera, found in damp soil. One of the largest and most abundant species in Europe and America is L. terrestris; many others are known; -- called also angleworm and dewworm.
(n.) A mean, sordid person; a niggard.
Example Sentences:
(1) It also strongly inhibited non-plasmic fibrinolysis with human leukocyte proteinase and earthworm proteinase.
(2) Monitoring of DDT and HCH residues in abiotic and biotic components of the environment of Delhi during 1988 to 1989 revealed low to moderate levels of these insecticides in soil, earthworms, birds, buffalo milk, water, freshwater clams, fish, human fat, human blood and breast milk samples.
(3) It was concluded that it is possible to substitute 30% of the protein in the diet of growing rabbits, with earthworm meal, without any adverse physiological effects.
(4) The complete nucleotide sequence of the gene for chain c of hemoglobin of the earthworm Lumbricus terrestris has been determined.
(5) For copper and dichloroaniline earthworms did recover cocoon production to a level as high as the control level or even higher; in case of pentachlorophenol, cocoon production was still reduced after 3 weeks in clean soil.
(6) The present results indicate that the toxicity and bioaccumulation and therefore the bioavailability of chlorophenols in soil to earthworms are dependent on the concentration in soil solution and can be predicted on the basis of adsorption data.
(7) In the cerebral ( = supraesophageal, suprapharyngeal) ganglion of the earthworm, a number of neurosecretory Gomori-positive perikarya are bipolar; others are unipolar, or multipolar.
(8) Such an activity is not inhibited by zymosan, inulin or lipopolysaccharide (LPS), nor by hydrazine or methylamine, suggesting that earthworm hemolysins are not related to C3 or C3b complement components.
(9) Proteinase-inhibiting components of the coelomic fluid of the earthworm Lumbricus terrestris were examined.
(10) Nerve fibres and cell bodies displaying vasoactive intestinal polypeptide (VIP) or pancreatic polypeptide (PP) immunoreactivity were demonstrated in ganglia of the earthworm (Lumbricus terrestris).
(11) The dorsal openings in the myelin sheath of the median giant fiber (MGF) of the earthworm (Lumbricus terrestris L.) have been studied with electronmicroscopical and electrophysiological methods.
(12) These results suggest that earthworm powder represents a possible oral thrombolytic agent.
(13) Chloragocytes and intestinal tissue showed significantly higher lead levels in contaminated earthworms than in control material.
(14) High concentration of lead in the soil does not favour increased accumulation of lead in the earthworms' organisms.
(15) The snakes were fed diets consisting of earthworms, Lumbricus terrestris, and mosquitofish, Gambusia affinis.
(16) Traditional formulations of the roles of supra- and subpharyngeal ganglia in the earthworm's behavior were reinvestigated with the use of saline rather than light as the aversive stimulus.
(17) This information on lymphocytic, granulocytic and inclusion-containing coelomocytes is crucial to understanding more about cellular immunity in the earthworm.
(18) Toxicity values were obtained for pentachlorophenol (PCP) and other compounds in the standard OECD and EEC earthworm test.
(19) A gavage technique has been developed that permits the administration of water-soluble and lipid-soluble test chemicals in spite of the extremely low level of triglyceride lipase activity in the earthworm gut.
(20) Conjugation with glutathione catalysed by glutathione S-transferases may consequently be an important detoxification mechanism in earthworms.