Results 181 to 190 of about 38,045 (222)

RADIOIODINE METABOLISM IN THE CHICK EMBRYO

Endocrinology, 1953
Many studies have been made of the histology of the thyroid gland at various stages in the development of the chick embryo. These studies, as well as several to detsrmine the age of the chick embryo at which biochemical differentiation or thyroid function begins, have recently been summarized by Moore (1950).
S H, WOLLMAN, E, ZWILLING
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Induction of gastrulation in the chick embryo

Developmental Genetics, 1987
AbstractInteraction between the epiblast and the primary hypoblast in chick blastula results in induction of the primitive streak (PS) in the epiblast. Alpha‐amanitin, a specific inhibitor of poly A‐containing RNA synthesis, inhibits formation of the definitive PS.
N, Zagris, D, Matthopoulos
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Ventilatory chemosensitivity in the chick embryo

Respiratory Physiology & Neurobiology, 2003
In the externally pipped chicken embryo, oxygen consumption through the chorioallantoic membrane (VO2CAM) ranged between 2 and 55% (mean approximately 24%) of that through the lungs (VO2lung). Hypercapnia (5'-10' of 2, 5, or 8% CO2) or mild hypoxia (15% O2) had minor effects on VO2, whereas moderate or severe hypoxia (10-5% O2) caused large drops of ...
Tara M, Menna, Jacopo P, Mortola
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Nucleoside phosphotransferase of chick embryo

Molecular and Cellular Biochemistry, 1979
This paper describes a purification procedure and some properties of a nonspecific nucleoside phosphotransferase of chick embryo, an activity which catalyzes the transfer of chick embryo, an activity which catalyzes the transfer of the phosphate ester from a deoxyribonucleotide or a pyrimidine ribonucleotide to a deoxyribonucleoside acceptor.
G, Tesoriere, R, Vento, G, Calvaruso, G, Taibi   +3 more
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The Development of Somites in the Chick Embryo

Development, 1963
ABSTRACTIn two groups of experiments the so-called ‘somite centres ‘were removed from chick blastoderms. Nevertheless, well-developed somites formed. It is concluded, therefore, that the ‘somite centres’ are not essential for somite formation. The same experiments, and others which are described, also provided evidence that somites can form in the ...
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Gonadal Growth in Chick Embryos

Nature New Biology, 1971
During ovarian differentiation of bird embryos, ovaries grow faster than testes. The difference for mammals may reflect the sex chromosome constitution.
U, Mittwoch, T L, Narayanan, J D, Delhanty, C A, Smith   +3 more
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Toxicity of metals to chick embryos

Bulletin of Environmental Contamination and Toxicology, 1976
A comparative index to the embryopathic effects of a number of metals which may appear as trace contaminants in avian food sources is given. Chicken eggs (White Plymouth Rock strain) were treated by yolk injection with sodium arsenite, sodium selenate and chloride salts of cadmium, lead, mercury, methyl mercury and zinc immediately prior to incubation.
W J, Birge, O W, Roberts
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Early development of the chick embryo

Journal of Morphology, 1993
AbstractThe ultrastructure of the early chick embryo was investigated, using scanning (SEM) and transmission electron microscopy (TEM). Eggs were obtained from the shell gland by injecting hens intravenously with a synthetic prostaglandin or arginine vasopressin.
J M, Watt, J N, Petitte, R J, Etches
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Allograft reactivity in chick embryos

Journal of Experimental Zoology, 1971
AbstractKinetic studies with the splenomegaly assay and the in vivo antibody assay of marker allogeneic immunocompetent cells were made to ascertain when in embryonic development the capacity to actively reject foreign cells is manifested by the chick embryo.
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The toxicity of phytohemagglutinins to chick embryos

Toxicon, 1976
F I, Ikegwuonu, O, Bassir
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