منابع مشابه
On eggs and chicken.
Insight into the relationship between early childhood infections and subsequent development of asthma has long been troubled by the failure to recognise the heterogeneity of "asthma" or recurrent wheeze in childhood. In the last decade, the concept of two or more wheezing phenotypes of childhood asthma has evolved. At the one end of the spectrum, there are children who develop recurrent wheeze ...
متن کاملof glycosaminoglycans in chicken eggs
Glycosaminoglycans (GAGs) have numerous applications in the fields of pharmaceuticals, cosmetics, nutraceuticals, and foods. GAGs are also critically important in the developmental biology of all multicellular animals. GAGs were isolated from chicken egg components including yolk, thick egg white, thin egg white, membrane, calcified shell matrix supernatant, and shell matrix deposit. Disacchari...
متن کاملGestagens and glucocorticoids in chicken eggs.
Avian eggs contain a variety of steroid hormones, which have been attributed as a tool for maternal phenotypic engineering. The majority of studies focuses on androgens, but also significant amounts of progesterone as well as other steroid hormones have been measured. The question if corticosterone is also present in eggs of chickens is currently under debate. The only analytical validation per...
متن کاملWindowing chicken eggs for developmental studies.
The study of development has been greatly aided by the use of the chick embryo as an experimental model. The ease of accessibility of the embryo has allowed for experiments to map cell fates using several approaches, including chick quail chimeras and focal dye labeling. In addition, it allows for molecular perturbations of several types, including placement of protein-coated beads and introduc...
متن کاملMicronutrients in Eggs for the Chicken Embryo
Avian embryos develop and grow from energy and nutrients stored in the egg by the hen. In this sense, breeder male contribution is not important. Follicular deposition of nutrients occurs over a wide range of time, but becomes relevant during the week prior to ovulation. Amounts, but also forms, of nutrients deposited in the egg determine success of embryo development and hatching of a healthy ...
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ژورنال
عنوان ژورنال: Noûs
سال: 2009
ISSN: 0029-4624
DOI: 10.1111/j.1468-0068.2008.01697.x