(1) Studies of ontogenesis contribute to better understanding of regulatory events underlying the striking heterogeneity in B-cell differentiation pathways employed in the human mucosal immune system.
(2) During human ontogenesis the antigen appears very early.
(3) Using the cluster analysis of objects in the space of physique factors the objective classification of peripubertal stage of ontogenesis in girls has been constructed.
(4) Enzymo-histochemical study of the human joint cartilage in ontogenesis showed a high 5-nucleotidase activity at all stages of human development.
(5) In the whole, the results indicate the existence of marked genetic determination of physique's growth and development in a stage under study of human ontogenesis.
(6) Content of soluble and insoluble collagen, glycosamine glycans, glycoproteins, lipids and nucleic acids was studied in rat lungs during postnatal ontogenesis (up to 32 months).
(7) At all stages of ontogenesis glycogen phosphorylase (EC 2.4.1.1) from liver chick embryos in represented by an isoenzyme whose properties are close to those of isoenzyme IL or F. Total enzyme activity (a+b forms) from the 8th day of development up to hatching gradually increases 1.5-fold, a practically complete activation of enzyme being observed by the end of embryogenesis.
(8) Using material on the evolution of the fundus of the oral cavity in amphibians, four principles were established for the origin of heterochronia: efficiency of ontogenesis; adaptability of an earlier (than in ancestors) beginning for functioning of traits; loss of the adaptive significance of a trait at a previous stage, but a preservation of it at a subsequent stage; and, a prolongation of the adaptive significance of a trait at later stages.
(9) During a phase of relatively stable tapping performance regular fluctuations in the tapping frequency occurred with a period duration between 0.67 and 13.3 s. These oscillations of the motor activity developed during ontogenesis: The slow fluctuations were found in all groups, whereas those with shorter periods were best pronounced in the older children.
(10) The results show that a functional insulin receptor can be detected at the early stages of fetal development in both tissues and is conserved throughout ontogenesis to adulthood.
(11) The concept is based on the data on the philo- and ontogenesis, reactivity and adaptability+, complexity and dynamism, stages and phases of the process.
(12) Therefore, thymus active fractions obtained from sheep at different stages of ontogenesis had a stimulating effect on cell proliferation and immunogenesis.
(13) By means of biomicroscopy main regularities in development of the skin capillary network have been revealed in the nail torus in the postnatal ontogenesis.
(14) The specification of pathomorphological changes occurring during Varestrongylus capreoli ontogenesis was studied on the basis of different forms of inflammation.
(15) Quite possibly they may be actively involved in the pathological process not only in the prenatal, but also in some cases in the postnatal ontogenesis.
(16) The appearance of microtubules and the development of their interrelations with the synaptic area and the nuclear envelope in differentiating neuroblasts from the anterior horn of the spinal cord in the first half of human antenatal ontogenesis was traced by methods of electron microscopy.
(17) The ontogenesis of vasopressin receptors in the rat collecting duct was studied by measuring the binding of [1-(beta-mercapto-beta,beta-cyclopentamethylenepropionic acid),2-O-methyltyrosine,4-threonine,8-ornithine,9-125I-tyrosylamide+ ++]-vasotocin (125I-d(CH2)5[Tyr(Me)2,Thr4,Tyr-NH(9)2]-OVT) to isolated cortical collecting ducts (CCD), outer medullary collecting ducts (OMCD) and inner medullary collecting ducts (IMCD) microdissected from collagenase-treated kidneys of 2- to 34-day-old rats and adult animals.
(18) The polyploidization of somatic cells during the ontogenesis is shown to be the natural phenomenon for most plant tissues and it is correlated with the intensification of cellular metabolism.
(19) The greatest quantity of these substances concentrate in brain and liver tissues and in brain tissues the pesticides accumulate during all the period of ontogenesis, but in liver - only during last months of active feeding period.
(20) The functional implications of the location and structure of the radial fibers during ontogenesis are discussed.
Phylogenesis
Definition:
(n.) Alt. of Phylogeny
Example Sentences:
(1) In view of the facts that uric acid is a common end-product of human and animal metabolism, it is abundantly present in the avian faecal matter and is capable of inducing mucoid growth and capsule formation in dry growing non-encapsulated strains or in an otherwise rough looking hypha forming isolate, its role in studying the phylogenesis of C. neoformans and its pathogenicity seems to be an important proposition.
(2) Also analogues seem to be the producing of the so-called instinctives as mam(m)a and papa by somewhat older babies which are able to pass over from the babbling into permanent words of the adults' speech in which they persist if used without shifting of sounds since they are produced de novo generation by generation, but they are subordinate to shifting and possible extinction if used in the form of derivatives in the standard language, and some phenomena of the phylogenesis as the survival of less differentiated species contrary to the relatively quick extinction of the highly specialized ones.
(3) It was suggested that the production of CSP might be associated with phylogenesis and that CSP might also be associated with the development of the cornea.
(4) The most probable hypothesis is that of a symbiotic origin of the first zygote by association of two protists one signifying a spherical oocell and the other a flagellated spermatozoan; this could be the first step of the metazoan ontogenesis and therefore also of the phylogenesis.
(5) Phylogenesis of Pinzgau cattle was studied by the method of cluster analysis.
(6) Hypotheses are advanced on the biological role of these types of fibroblasts and their origin in phylogenesis.
(7) The increase in concentration of both glycolipids in the brain of mammals in phylogenesis was demonstrated.
(8) The temporal modalities of SP (diachronic organization) are also discussed in relation to phylogenesis.
(9) An analysis of mechanisms regulating the muscular tone, conducted on the basis of a study of the phylogenesis of nervous structures, as well as on experimental and clinical studies of the mascular tone in normal conditions and in pathology permitted to distinguish the following 6 levels of muscular regulation: segmento-peripheral, general suprasegmental, cerebellar-stem; pallidal, strial, cortical.
(10) Accelaration and retardation of certain ontogenetic phases or the whole ontogenesis have developed during phylogenesis and have been fixed genetically as a special reaction norm.
(11) The data obtained are discussed in relation to the development of the brain of mammals during their phylogenesis.
(12) The results of comparative study of Kakhetian and other domesticated and wild pig forms characteristics makes it possible to suppose that the presence in Kakhetian pigs gene fund of some alleles of East Asian origin is due to a certain participation of the Large White and Mangalica breeds in their phylogenesis.
(13) In the phylogenesis of vertebrates, brain structures differentiate presumably into both the specific ones which perform the analysis of only the given kind of information, and those (conventionally described as non-specific) which are specialized on sensory integration and exhibit functional polymodality.
(14) The A.A. Zavarzin's law of parallel lines in tissue evolution showing the appearance of a common tissue organization pattern is the major regularity of the cellular development of animals in phylogenesis.
(15) The arrival of encephalins forces us to leave behind such attitudes for three reasons: 1--they clearly throw light into the darkness of a whole area of pharmacology; 2--they open up a pharmacological persepective; 3--they raise a number of theoretical and practical questions, which range from their phylogenesis to the hope of one day possessing morphine-like substances without side-effects.
(16) The duration of negative chronotropic effect in the heart of the cod was equal to 700 ms, that of the frog--to 2.700 ms. Functional role of these differences is discussed in relation to the problem of the development of parasympathetic regulation of the heart rate in phylogenesis of vertebrates.
(17) A conclusion has been made that tool-using in apes is qualitatively new form of behaviour arising in phylogenesis of primates and demonstrating us prerequisity of tool-using of early hominids.
(18) The functional integration of the three levels of individual development--actual genesis, ontogenesis, phylogenesis--leads the author to the term "hologenesis".
(19) A hypothesis is put forward on pathways of changes of prospective importance of blastocoele in the vertebrate phylogenesis, in connection with their transition to meroblastic development.
(20) It is supposed that non-equivalence of the elements of subsystems in ontogenesis is sustained by their asynchronous development, while in phylogenesis--by intratissue divergence.