Results 351 to 360 of about 223,364 (391)
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Biological Reviews, 1972
Summary1. In this review, representative data on the nature of enzyme multiplicity and the developmental progressions of multiple enzyme forms have been collected, and the significance of this material has been discussed in relation to gene involvement during tissue differentiation.2.
Roger S. Holmes, Colin Masters
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Summary1. In this review, representative data on the nature of enzyme multiplicity and the developmental progressions of multiple enzyme forms have been collected, and the significance of this material has been discussed in relation to gene involvement during tissue differentiation.2.
Roger S. Holmes, Colin Masters
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Cladistics, 1985
Abstract— Common themes in some recent expositions of character phylogeny are attempts to prove that outgroup comparison is a method of the greatest generality, and that the ontogenetic criterion reduces to outgroup comparison. Another common theme is that pattern cladistics is wrongheaded in suggesting that ontogenetic data have a unique value for ...
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Abstract— Common themes in some recent expositions of character phylogeny are attempts to prove that outgroup comparison is a method of the greatest generality, and that the ontogenetic criterion reduces to outgroup comparison. Another common theme is that pattern cladistics is wrongheaded in suggesting that ontogenetic data have a unique value for ...
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Current Opinion in Hematology, 2008
The present study review examines the current understanding of the ontogeny of erythropoiesis with a focus on the emergence of the embryonic (primitive) erythroid lineage and on the similarities and differences between the primitive and the fetal/adult (definitive) forms of erythroid cell maturation.Primitive erythroid precursors in the mouse embryo ...
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The present study review examines the current understanding of the ontogeny of erythropoiesis with a focus on the emergence of the embryonic (primitive) erythroid lineage and on the similarities and differences between the primitive and the fetal/adult (definitive) forms of erythroid cell maturation.Primitive erythroid precursors in the mouse embryo ...
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Acta geneticae medicae et gemellologiae: twin research, 1995
I would like to reply here to a number of criticisms concerning the stance taken by Pope John Paul II on the rights of the unborn child in his book Crossing the Threshold of Hope, made by Dr John Godfrey of the University of Edinburgh in a recent article entitled “The Pope and the Ontogeny of Persons” (Nature, 12 January, 1995).The accusation levelled ...
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I would like to reply here to a number of criticisms concerning the stance taken by Pope John Paul II on the rights of the unborn child in his book Crossing the Threshold of Hope, made by Dr John Godfrey of the University of Edinburgh in a recent article entitled “The Pope and the Ontogeny of Persons” (Nature, 12 January, 1995).The accusation levelled ...
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Ontogeny of the Hematopoietic System
Annual Review of Immunology, 2007Blood cells are constantly produced in the bone marrow (BM) of adult mammals. This constant turnover ultimately depends on a rare population of progenitors that displays self-renewal and multilineage differentiation potential, the hematopoietic stem cells (HSCs).
Cumano, Ana, Godin, Isabelle
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Ontogeny of Performance in Vertebrates
Physiological and Biochemical Zoology, 2006When competing for food or other resources, or when confronted with predators, young animals may be at a disadvantage relative to adults because of their smaller size. Additionally, the ongoing differentiation and growth of tissues and the development of sensory-motor integration during early ontogeny may constrain performance.
Herrel, Anthony, Gibb, Alice C.
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The Ontogeny of Fluctuating Asymmetry
The American Naturalist, 2003We tested seven hypotheses regarding the mechanisms by which fluctuating asymmetry (FA) originates. We did this by analyzing data on four bilateral characters measured repeatedly during the development of individual domestic fowl. Immediately posthatching, there was substantial directional asymmetry, which rapidly decreased.
Kellner, James R., Alford, Ross A.
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Acta Oto-Laryngologica, 1992
The development of human hearing from the 26th week of fetal life to the third year post natal life is reviewed. The human fetus can perceive, react, and store auditory information from the 26th week of fetal life. This ability appears to play a role in the development of language.
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The development of human hearing from the 26th week of fetal life to the third year post natal life is reviewed. The human fetus can perceive, react, and store auditory information from the 26th week of fetal life. This ability appears to play a role in the development of language.
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Conclusion: The Ontogeny of Investigating Primate Ontogeny
2012The development of offspring in primates, including humans, provides the focus for Building Babies: Primate development in proximate and ultimate perspectives (nobly edited by Katie Hinde, Kathryn Clancy, and Julienne Rutherford). The volume has corralled historically disparate fields into a synthetic whole with the aim of generating a cohesive cross ...
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Research in Immunology, 1989
Abundant evidence indicates that dendritic cells arise from the bone marrow. In vitro, precursors that differ phenotypically from mature dendritic cells divide several times to form functional dendritic cells. A soluble factor(s) produced in the supernatants of ConA-stimulated spleen cells enhances the production of dendritic cells.
W.E. Bowers, E.M. Goodell
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Abundant evidence indicates that dendritic cells arise from the bone marrow. In vitro, precursors that differ phenotypically from mature dendritic cells divide several times to form functional dendritic cells. A soluble factor(s) produced in the supernatants of ConA-stimulated spleen cells enhances the production of dendritic cells.
W.E. Bowers, E.M. Goodell
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