منابع مشابه
Goosecoid and the organizer.
The molecular nature of Spemann's organizer phenomenon has long attracted the attention of embryologists. goosecoid is a homeobox gene with a DNA-binding specificity similar to that of Drosophila bicoid. Xenopus goosecoid is expressed on the dorsal side of the embryo before the dorsal lip is formed. Cells expressing goosecoid are fated to become pharyngeal endoderm, head mesoderm and notochord....
متن کاملThe Organizer and Beyond
Rehovot 76100 ganizer, positioned on the future dorsal side of the em-Israel bryo, can be viewed as an array of distinct secreted inhibitors that pattern the embryo by antagonizing the activity of ventralizing factors (BMPs and Wnts). Studies In 1924 Hans Spemann and Hilde Mangold carried out in Xenopus have uncovered an amazing diversity of in-an experiment that revolutionized the field of dev...
متن کاملThe Semantic Conference Organizer
34.1 Background . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 571 34.2 Latent Semantic Indexing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 572 34.3 Software Issues . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...
متن کاملLocal Organizer
Many biomedical ontologies have now been developed, stimulated by the increasing importance of biomedical ontologies in the scientific community. Most ontology development efforts have required not only the participation of ontology engineers but also of domain experts. This should help the veracity of the domain knowledge, but not necessarily the engineering of the ontology. In fact, the quali...
متن کاملThe midbrain--hindbrain boundary organizer.
Cell fate in the cephalic neural primordium is controlled by an organizer located at the midbrain-hindbrain boundary. Studies in chick, mouse and zebrafish converge to show that mutually repressive interactions between homeodomain transcription factors of the Otx and Gbx class position this organizer in the neural primordium. Once positioned, independent signaling pathways converge in their act...
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ژورنال
عنوان ژورنال: JOURNAL OF INDIAN AND BUDDHIST STUDIES (INDOGAKU BUKKYOGAKU KENKYU)
سال: 2000
ISSN: 1884-0051,0019-4344
DOI: 10.4259/ibk.49.195