The distal boundary of myogenic primordia in chimeric avian limb buds and its relation to an accessible population of cartilage progenitor cells
[摘要] Usingchimerasconsistingofchickembryosthathadreceivedsubstitutiongraftsofquailsomites,wehavedeterminedthedistalmostextensionofthemyogenicprimordiaintheoutgrowingwingbudat5daysofincubation.AtHamburger-Hamiltonstage25themostdistalpremusclecellisconsistently300μmormorefromtheapexofthewingmesoblast.Thestage25wingtipresemblesveryearlywholelimbbudsinnothavingproceededbeyondthemesenchymalstateorhavingexpressedmarkersofterminaldifferentiation.However,unlikeearlywholelimbbudsitisfreeofamyogenicsubpopulation.Wethereforeproposethatthestage25wingtipistheappropriatesystemforinvitroandmolecularstudiesofcartilagedifferentiation.
[发布日期] [发布机构]
[效力级别] [学科分类] 生物科学（综合）
[关键词] [时效性]
