(a.) Of or pertaining to ontogenesis; as, ontogenetic phenomena.
Example Sentences:
(1) The involvement of phospholipids into the function of the hormonoreactive system realizing the catecholamine action on the skeletal muscle metabolism was studied at different stages of chicken ontogenetic development.
(2) Seizures elicited by posture change and intraperitoneal administration of convulsants were studied ontogenetically in the Mongolian gerbil (Meriones unguiculatus).
(3) Phylogenetic and ontogenetic justifications for this organization are adduced.
(4) The much less rapid ontogenetic decline seen for the predominant dopamine metabolite, homovanillic acid (HVA), indicates that differing factors affect CSF levels of the two acid metabolites.
(5) Further, there was no evidence of ontogenetic modification of the amylase isozymes.
(6) Consequently, the present results may mean that the studies using uptake of [3H]GABA, [3H]ACHC, or [3H]DABA as a specific marker for GABAergic neurons differentiating during the ontogenetic development of the central nervous system may have to be interpreted with caution.
(7) Ontogenetic changes of the total activity and the subcellular distribution of Ca2+-activated, phospholipid-dependent protein kinase (protein kinase C) were investigated in the cat visual cortex.
(8) The correlation with an anatomically and ontogenetically well-founded classification provides knowledge for use in the individual case which may be helpful in selecting the proper surgical procedure, in establishing a schedule, and in providing the prognosis.
(9) Plastic responses in leaf form resulting from ontogenetic or external influences are initiated very early in primordial development and are brought about by effects on the rate and direction of cell division and expansion in different regions of the primordium.
(10) Ontogenetic data on developmental stages I-IV of 3678 melanosomes based on geometric considerations (length, width, shape, and area) showed that MSH did not induce a complete transformation from spherical phaeomelanosomes to elliptical eumelanosomes.
(11) A certain recapitulation of the ontogenetic development of neuronal differentiation in PNETs is given by the fact that chromogranin A immunoreactivity can regularly be seen already in poorly differentiated neurons and synaptophysin in well-differentiated ones.
(12) Intercorrelations of dipeptidase activities vary ontogenetically, which is consistent with the need for coordinate expression of these enzymes during certain developmental stages.
(13) The ontogenetic study of pyruvate kinase in the brain and liver tissues was performed in different batches of rats, from the foetus at the 13th day of gestation to the adult subject.
(14) Ontogenetic differences in selenium metabolism could be one of the factors underlying the differences in the response of the young and the adult rats to toxic doses of selenite.
(15) It appeared only in the early phases of ontogenetic development (up to the age of 15 days); cataract was not observed during later development.
(16) The regimen of stress used is known to be associated with an abnormal ontogenetic pattern of testosterone secretion from the fetal testes.
(17) The backscattered electron imaging mode of the scanning electron microscope was used to study the ontogenetic acquisition of argyrophilia in Pneumocystis carinii in rats.
(18) The existence of an ontogenetic shift of tonotopic organization throughout the auditory pathway concomitant with cochlea maturation is a matter of controversy.
(19) This is similar to the ontogenetic sequence typically found for immune reactivity in vertebrates.
(20) The ontogenetic development of histamine was studied in the diabetes insipidus rat to clarify the possible interference between the lack of vasopressin and the development of histaminergic systems in the hypothalamus.
Ontogenic
Definition:
(a.) Ontogenetic.
Example Sentences:
(1) The possibility that both IL 2 production and IL 2R expression are autonomously activated early in T cell development, before acquisition of the CD3-TcR complex, led us to study the implication of alternative pathways of activation at this ontogenic stage.
(2) The ontogenic development of B cell clonal precursors (BCP) reactive to bromelain-treated, syngeneic erythrocytes (BrMRC) and to single-stranded DNA has been studied by limiting dilution of both spleen and peritoneal cells.
(3) The ontogenic development of neurophysin has not been investigated so far.
(4) The ontogenic development of lipoprotein lipase and liver triglyceride hydrolase was studied in the rat.
(5) The ontogenic profiles of glycine modulatory site binding and PCP receptor binding were very similar to each other.
(6) From several aspects, the tissue distribution and the ontogenic expression of beta-4-N-acetylgalactosaminyltransferase and Tamm-Horsfall glycoprotein are similar.
(7) These results revealed that the ANP gene expression declined during ontogenic ageing development and ginsenosides possessed anti-ageing effects in the heart endocrineous function aspect.
(8) In the early phase of their ontogenic development NZB mice were found to produce high titers of the interferon.
(9) In conclusion, there exists a critical period during the perinatal development of the rat, when thyroid hormone is essential for a subsequent normal IGFBP-2 ontogenic pattern.
(10) These results suggest an intriguing ontogenic relationship between A- and PP-cells, and also indicate that PP-containing cells may occupy a hitherto unexpected place in the lineage of endocrine islet cells.
(11) The ontogenic expression of proenkephalin A (ProEnk A) mRNA and phenylethanolamine N-methyltransferase (PNMT) mRNA was examined in the foetal sheep adrenal medulla by the use of specific oligodeoxyribonucleotide probes.
(12) Using an antibody raised against highly purified dog renal proximal tubule brush border membranes, we have investigated the tissue distribution and ontogenic development of antigens sharing specificity with those in the renal brush border membrane.
(13) The ontogenic profile of NMDA recognition site binding was similar in other hippocampal regions, although the initial age of maximal binding and the period of stabilization varied.
(14) Microvessels and capillaries, structures which have been shown to contain [3H]quinuclidinyl benzilate binding sites, may partially account for the observed ontogenic pattern.
(15) The functional significance of the S-antigen as well as some phylogenetic and ontogenic implication of this marker are discussed.
(16) In the basal condition without stress, fetal plasma ACTH and B showed parallel ontogenic patterns, having a peak value on day 19 of gestation.
(17) In summary, further biochemical and genetic analysis of FT antigens will contribute to an understanding of the ontogenic development of T cells as well as the leukemogenesis of T cell leukemias.
(18) Thymus dependency in the ontogenic development is low as compared with other T cell subsets.
(19) The ontogenic appearance and lymphoid tissue distribution of the murine B cell IgE FcR (Fc epsilon R) was examined.
(20) In search of ontogenic changes in Epo receptor behavior, we studied characteristics of specific binding to hamster yolk sac erythroid cells during hamster ontogeny.