نتایج جستجو برای: osteology
تعداد نتایج: 651 فیلتر نتایج به سال:
INTRODUCTION THE MAIN FUNCTIONS of the present paper are to demonstrate that two very different families of eels have hitherto been included under the "Echelidae" and to allocate these families to their proper positions in the order Anguilliformes (or Apodes ). In order to establish these points, the osteology of Kaupichthys diodontus Schultz is dealt with in some detail. On September 7, 1949, ...
Exosomes are membranous lipid vesicles fused with intracellular multicellular bodies and then released into the extracellular environment. They contain various bioactive substances, including proteins, mRNA, miRNAs, lncRNAs, circRNAs, lipids, transcription factors, cytokine receptors. Under certain conditions, bone marrow mesenchymal stem cells (BMSCs) can differentiate osteoblasts, chondrocyte...
The cephalic and pectoral girdle structures of the sisorid Glyptothorax fukiensis (tribe Glyptothoracini) are described and compared with those of representatives of the other three sisorid tribes, namely Glyptosternon reticulatum (tribe Glyptosternini), Bagarius yarreli (tribe Bagariini) and Gagata cenia (tribe Sisorini), as well as with those of several other catfishes, as the foundation for ...
Our knowledge of Cretaceous plumage is limited by the fossil record itself: compression fossils surrounding skeletons lack the finest morphological details and seldom preserve visible traces of colour, while discoveries in amber have been disassociated from their source animals. Here we report the osteology, plumage and pterylosis of two exceptionally preserved theropod wings from Burmese amber...
About 400 million years ago, the first bone-like material, aspidin, was developed for external protection body of invertebrate marine creatures; this mineral shell is now believed to function as a reservoir phosphorous and calcium [...]
Giraffidae is the only family of ruminants that is represented by two extant species; Okapia johnstoni and Giraffa camelopardalis. Of these taxa, O. johnstoni represents a typical short-necked ungulate, and G. camelopardalis exemplifies the most extreme cervical elongation seen in any ruminant. We utilize these two species to provide a comprehensive anatomic description of the cervical vertebra...
The ossification centers onset of the quail vertebrae, ribs, and sternum in embryos and hatchling birds was studied. Specimens were cleared, stained with Alcian Blue and Alizarin Red S and examined using stereomicroscope. The chondral rudiments of the vertebrae were observed at the 6th day of incubation (E6). The osteogenesis of the vertebrae was accomplished with both perichondral a...
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