(a.) Of or pertaining to animals of the tortoise kind.
(n.) One of the Chelonia.
Example Sentences:
(1) Thus, the possibility exists that androgen secretion in some chelonian systems may exhibit a high degree of LH specificity like that of mammals and birds.
(2) Fossil eggs attributable to dinosaur (probably prosauropod) parentage that have been recovered from the early Jurassic Elliot Formation sediments at the Rooidraai locality possess shells that are similar to those of birds and crocodilians, and distinctly unlike those of chelonians and gekkonids.
(3) Review of the four cases of chelonian mycobacteriosis in the literature indicated that pulmonary tubercules and plastral ulcerations are typical manifestations.
(4) Although previous in vivo studies indicated that TSH secretion was not affected by TRH in turtles, the present data indicate that the dose sensitivity of the chelonian gland is comparable with that of mammalian and avian pituitaries.
(5) Thus, the presence of NT-containing cells in urinary bladder is not common among subavian vertebrates and may even be restricted to the Emydidae family of chelonians.
(6) The presence of insulin in the gastrointestinal tract of chelonians represents a major departure from the typical vertebrate condition which is characterized by an absence of insulin from the spectrum of regulatory peptides in the gut.
(7) Comparative studies of cortical development in reptiles suggest further that the mammalian type of cortical architectonics has been acquired progressively during brain evolution, and reveal some similarities in early cortical organization between reeler and reptilian, particularly chelonian, embryos, most notably the presence of an inverted gradient of cortical histogenesis.
(8) The general morphological features of the intramural enteric nervous system of a chelonian species, i.e.
(9) Thus, the reduction in metabolism and growth of chelonian embryos developing in dry environments does not result from an inhibition of intermediary metabolism caused by urea, and the 'urea hypothesis' for control of metabolism cannot be accepted in its present form.
(10) The orbital glands of the chelonians Pseudemys scripta and Testudo graeca were investigated at the histological, histochemical and ultrastructural levels.
(11) The present data seem to indicate that the pituitary plays a significant role on electrolyte homeostasis and on the regulation of plasma mineralocorticoids level in terrestrial chelonians.
(12) The chelonians occupy an important position in phylogeny representing a very early branching from the ancestral reptile stock.
(13) In the past, the harderian and lacrimal glands in chelonians have often been mistaken for one another.
(14) Immunohistochemical methods using affinity adsorbed antibodies raised against the three families of calcitonins (CT) were applied to ultimobranchial (UB) cells in situ to investigate the nature of the Chelonian calcitonin molecule and its distribution in the ultimobranchial bodies of the freshwater turtle, Pseudemys scripta.
(15) These data on whole blood do not support previous generalizations in the literature suggesting marked differences in oxygen-haemoglobin binding between aquatic and terrestrial chelonian reptiles.
(16) It is suggested therefore that the role of the marginal band is essential to maintain the ellipsoidal shape of chelonian erythrocytes.
(17) Binding assays (in heterologous and homologous systems) again demonstrated the general absence of an FSH-specific receptor in the reptilian (chelonian and squamate) testes.
(18) Its scarce development in the chelonian, subject of the present study, is related to their primitive brain pattern.
(19) The possible relationship between overlap of the visual fields and the importance of ipsilateral retinal projections was investigated in the two Chelonian genera Chinemys and Trionyx.
(20) This preliminary investigation has brought to light differences in GC percentages and in the shape of melting curves between chelonian DNA and that from saurians and ophidians.
Reptile
Definition:
(a.) Creeping; moving on the belly, or by means of small and short legs.
(a.) Hence: Groveling; low; vulgar; as, a reptile race or crew; reptile vices.
(n.) An animal that crawls, or moves on its belly, as snakes,, or by means of small, short legs, as lizards, and the like.
(n.) One of the Reptilia, or one of the Amphibia.
(n.) A groveling or very mean person.
Example Sentences:
(1) We have labelled single, primary auditory neurones in three reptile and one bird species.
(2) The microchromosomes are like those found in certain other primitive fishes as well as in reptiles and birds.
(3) Its adaptive value, chiefly in reptiles, remains an open question.
(4) Since it is known that fever is beneficial in infected reptiles, our experiments were viewed as an initial step in the investigation of a similar potentially beneficial effect in mammals.2.
(5) The distribution of serotonin-immunoreactive cells in the lung of 4 species of reptiles was investigated.
(6) The endocrine pancreas of this reptile is located throughout the spleen side of the organ and consists of islet-like structures, small groups of two to five cells, and single scattered endocrine cells.
(7) As in the case of other reptiles, particularly the alligator, a limited range of peptide-storing cells was found in the gut of the crocodile.
(8) There is clearly an MHC in amphibians and birds with many characteristics like the MHC of mammals (a single genetic region encoding polymorphic class I and class II molecules) and evidence for polymorphic class I and class II molecules in reptiles.
(9) Among birds 84.2% of the isolates were S. typhimurium, among mammals 62.6%, among reptiles only 26.8%.
(10) The evolution of enamel structure is dealt with here on the basis of fossil reptiles and mammals ranging from the Triassic to the present.
(11) An immunocytochemical method, using glutaraldehyde fixation and an antiserum developed against a GABA-glutaraldehyde protein conjugate, permitted direct visualization of GABAergic structures in the brain of a reptile (chameleon).
(12) Rodioimmunoassayable somatostatin (SRIF) was found in acid ethanol extracts from various parts of the gastro-entero-pancreatic (GEP) endocrine system in reptiles, amphibians, teleost bony fish, cartilaginous fish, and jawless fish, as well as in a deuterostomian invertebrate, the tunicate, Ciona intestinalis.
(13) The ultrastructure of the nasal glands of the roadrunner injected with salt and of quail drinking 200 mM NaCl was similar to that of salt glands in reptiles and the fresh-water acclimated duck.
(14) A tabulation of previously documented ovarian neoplasia in reptiles and a comparison of this cancer to those occurring in women will be discussed.
(15) the bowel of reptiles, has no changed for some hundred million years.
(16) On the basis of the amino acid sequence of cytochromes c in different species the degree of clustering and the degree of the chain asymmetry of the corresponding structural genes of DNA was found to have a general tendency towards an increase in the following order: invertebrates, fishes, amphibians, reptiles, birds, mammals.
(17) A tendency for an increase in the index of clustering of DNA was revealed in the sequence: invertebrates, fishes, amphibians, reptiles, birds, mammals.
(18) The anti-G beta, gamma antibodies recognized a 35-36-kDa protein in brain of vertebrates such as mammals (rat), avians (pigeon), amphibians (frog), fish (trout), and reptiles (turtle) but not in the invertebrates such as molluscs (snail) and insects (locust).
(19) These results reveal that some species of fishes, amphibians and mammals can act as the second intermediate host and that some species of reptiles, birds and mammals can act as a paratenic host.
(20) However, in many of these animals, including reptiles, the physiological functions and importance of the system remain unclear.