Fibroblast behavior in the embryonic chick heart
نویسندگان
چکیده
منابع مشابه
Fibroblast progenitor cells of the embryonic chick limb.
A population of mesenchymal cells derived from the stage-25 chick wing tip gives rise to progeny of a similar morphology and to authentic fibroblasts when grown in low density culture. Mixed clones containing both cell types are often observed. As the more rapidly proliferating fibroblasts begin to predominate in these cultures, collagen biosynthesis rises from the basal mesenchymal level to a ...
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متن کاملThe Spread of Excitation in the Embryonic Chick Heart
The spread of excitation in embryonic chick hearts, ranging in age from 7 to 20 days, was studied with both intracellular and extracellular electrodes. Evidence that the delay in ventricular excitation could be attributed to the cells of the entire atrioventricular (AV) ring was obtained, in part, from sagittal sections of the heart. In the intact preparation, uniform propagation occurred throu...
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were present in the ventricular myocytes from hearts at day 11 of incubation. However, day 11 hearts with persistent truncus arteriosus showed a twofold reduction in the peak magnitude of ICa.L at a test potential of + 10 mV without a concomitant reduction in the number of L channels detected by 1,4-dihydropyridine antagonist [(+)[3H]PN200-110] and agonist (Bay K 8644) receptor binding. The res...
متن کاملDerivation of the Z Line in the Embryonic Chick Heart
Although the fine structure of the Z line in muscle has been described in great detail (Auber and Couteaux, 1963 ; Franzini-Armstrong and Porter, 1964; Garamvolgyi, 1963 ; Kelly, 1967; Knappeis and Carlsen, 1962 ; Reedy, 1964), the origin of the Z line substance has not been definitely established. Our studies of the myocardium in the embryonic chick, however, indicate an association of the den...
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ژورنال
عنوان ژورنال: Developmental Dynamics
سال: 1993
ISSN: 1058-8388
DOI: 10.1002/aja.1001980204