![]() In the wild, hens hide their eggs then begin incubation of many eggs at the same time so as not to have to care for different agesĤ) Some genetic lines.(but these are often lots of trouble to maintain)ĥ) Chorioallantoic grafting : Isolated organs will develop using blood supply from allantois.ġ) Embryos reach ~20,000 cell stage inside hen's body! Making it very difficult to study cleavage or blastula stages.Ģ) Shell is opaque (but you can cut holes!) (but there are methods by which you can get development of isolated embryos, in glass dishes instead of inside the shell) Quail-chick grafts became the "gold standard" for fate mapping and was used to prove the neural crest origin of lots of specific differentiated cell types.Īdvantages of chicken embryos for embryological research:ġ) Cheap! Cheep! Cheep! & Available from agriculture.Ģ) Fairly large embryos: good source of cells for tissue cultureģ) Development can be synchronized by cooling, then warming. ![]() (Also, labeled antibodies are available that bind specifically to quail cells, although this really can't be as trustworthy as nuclear shape, in my opinion.) The nuclei of Japanese Quail cells look very different is stained microscope sections so you can tell them apart easily. ![]() ![]() Which mostly means chickens: Their genus name is " Gallus "Īlthough much key research has used Japanese Quail as a source of cells to be grafted to chicken embryos. Biology 104 Spring 2004 - Bird and Mammal Embryologyīiology 104: Spring 2004 : Bird and Mammal Embryology Bird Embryology: ![]()
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