Results 221 to 230 of about 695,954 (267)

Gravity and Embryonic Development

1976
The relationship between the developing embryo (both plant and animal) and a gravitational field has long been contemplated. The difficulty in designing critical experiments on the surface of the earth because of its background of 1 g, has been an obstacle to a resolution of the problem.
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Early mammalian embryonic development

American Journal of Industrial Medicine, 1983
This report examines the major events occurring during the first month of development in the human embryo. Developmental events are detailed, beginning with cleavage of the zygote and ending with the formation of the three primary germ layers. Certain aspects of early human development are compared with that in lower forms of vertebrates to emphasize ...
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Proto-oncogenes and embryonic development

Biochimie, 1988
The role of proto-oncogenes in embryonic development was investigated using one of the most characterized vertebrates, the amphibian Xenopus laevis. Genes which belong to the major proto-oncogene families have been detected in Xenopus genome. The developmental control of the myc gene was assayed using a characterized Xenopus myc probe and specific ...
Marcel Méchali, Michel Gusse, Sophie Vriz, Michael Taylor, Yannick Andéol, Jacques Moreau, Jacques Hourdry, Michel Leibovici, Annie Brulfert, Geneviève Almouzni, Sylvie Mousseron-Grall   +10 more
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Embryonic and post-embryonic development

1981
The modern era of insect developmental study began almost a century ago with the outstanding descriptive work of Wheeler (1889, 1893) in the United States and Heymons (1895) in Germany. It is ironic that the developmental analysis of cockroaches, among the most studied insects, has advanced so little since.
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Glycoprotein Synthesis and Embryonic Development

Critical Reviews in Biochemistry, 1983
One of the most striking morphogenetic events during embryonic development is gastrulation, a process that leads to formation of the primitive gut. Using sea urchin embryos, we have studied the synthesis and function of glycoproteins during gastrulation.
William J. Lennarz, David Epel
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Tuftelin's involvement in embryonic development

Journal of Experimental Zoology Part B: Molecular and Developmental Evolution, 2019
AbstractLittle is known about tuftelin expression in the developing embryo, previously it was thought to play a role in tooth enamel mineralization. In this study we show tuftelin's spatio‐temporal expression in mineralizing and nonmineralizing tissues of the craniofacial complex in the developing mouse embryo.
Dekel Shilo, Anat Blumenfeld, Amir Haze, Shay Sharon, Koby Goren, Salem Hanhan, Yael Gruenbaum‐Cohen, Asher Ornoy, Dan Deutsch   +8 more
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Embryonic development and pediatric oncogenesis

1997
In recent years, significant advances in understanding the molecular genetics of human cancer have been made. Application of these research advances to clinical practice is beginning. While researchers are identifying oncogenes and tumor suppressor genes and studying their specific functions, clinicians are using knowledge of oncogenes and tumor ...
D O, Walterhouse, J W, Yoon
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Motoneuronal development in the embryonic zebrafish

Development, 1991
Abstract To learn how neurons find their appropriate targets, we have studied two populations of motoneurons in the embryonic zebrafish: primary motoneurons, individually identified cells whose growth cones pioneer the first nerve pathways in the muscle, and secondary motoneurons, cells which develop later and whose growth cones ...
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Fertilization and early embryonic development

Current Opinion in Obstetrics and Gynecology, 1992
Whether one carefully and meticulously records detailed observations in the laboratory, or jumps feet first into new and exciting areas of investigation, each scientist contributes to the advances being made in the control of human reproduction. The study of spermatozoa, oocytes, sperm-oocyte interaction, preembryo growth and development, and early ...
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Blastokinesis and embryonic development in a phasmid

Experientia, 1950
Die Blastokinese des Embryos der StabheuschreckeB. libanicus besteht aus drei getrennten Bewegungen. Hinweise auf den Mechanismus der einzelnen Bewegungen ergeben sich aus den Resultaten der Zentrifugierung und Kuhlung der Eier wie auch aus den histologischen Untersuchungen der Embryonen selbst.
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