منابع مشابه
On Certain Problems of Vertebrate Embryology
The author, in these two essays, puts forward a theory to explain certain phenomena which occur in the process of development of vertebrates. The theory is, that there is a hidden alternation of generations?an asexual larval form, succeeded by a sexual one. To the first belong such structures as a yolk-sac, transient nervous system and notochord, which in all vertebrate groups are found to disa...
متن کاملApproaches and species in the history of vertebrate embryology.
Recent debates about model organisms echo far into the past; taking a longer view adds perspective to present concerns. The major approaches in the history of research on vertebrate embryos have tended to exploit different species, though there are long-term continuities too. Early nineteenth-century embryologists worked on surrogates for humans and began to explore the range of vertebrate embr...
متن کاملEmbryology
coloured plates. These are of the very greatest value in assisting one to follow the meaning of the letterpress. This, we think, is particularly the case in the chapter dealing with Meckel's diverticulum. The volume is one that should prove itself of great value to surgeons and physicians and as a book of reference. As would be expected the publishers have done their share of the work in a most...
متن کاملA history of normal plates, tables and stages in vertebrate embryology.
Developmental biology is today unimaginable without the normal stages that define standard divisions of development. This history of normal stages, and the related normal plates and normal tables, shows how these standards have shaped and been shaped by disciplinary change in vertebrate embryology. The article highlights the Normal Plates of the Development of the Vertebrates edited by the Germ...
متن کاملThe contribution of chicken embryology to the understanding of vertebrate limb development
The chicken is an excellent model organism for studying vertebrate limb development, mainly because of the ease of manipulating the developing limb in vivo. Classical chicken embryology has provided fate maps and elucidated the cell-cell interactions that specify limb pattern. The first defined chemical that can mimic one of these interactions was discovered by experiments on developing chick l...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Nature
سال: 1893
ISSN: 0028-0836,1476-4687
DOI: 10.1038/048265a0