نتایج جستجو برای: gut morphology
تعداد نتایج: 195384 فیلتر نتایج به سال:
The human disease Hermansky-Pudlak syndrome results from defective biogenesis of lysosome-related organelles (LROs) and can be caused by mutations in subunits of the BLOC-1 complex. Here we show that C. elegans glo-2 and snpn-1, despite relatively low levels of amino acid identity, encode Pallidin and Snapin BLOC-1 subunit homologues, respectively. BLOC-1 subunit interactions involving Pallidin...
Despite being internal organs, digestive structures are frequently preserved in Cambrian Lagerstätten. However, the reasons for their fossilisation and their biological implications remain to be thoroughly explored. This is particularly true with arthropods--typically the most diverse fossilised organisms in Cambrian ecosystems--where digestive structures represent an as-yet underexploited alte...
The evolution of herbivory in reptiles is rare and poorly understood. Researchers have speculated why some lineages of lizards have undergone evolutionary shifts from omnivory to herbivory, but no one has studied the mechanistic basis of this form of diet evolution. I will test whether induced shifts in diet (i.e., omnivory to herbivory) adhere to the popular paradigm that formfollows-function ...
The morphology of the normal bovine fetal gut has receivec little attention. A more detailed knowledge of its structure is necessary to serve as a basis for studies of pathologic changes in the fetal gut and early postnatal gut in this species. The development of Peyer’s patches, argentaffin cells, and Paneth cells was studied in the bovine fetuses. These were selected because they represent sp...
The gut microbiome of insects plays an important role in their ecology and evolution, participating in nutrient acquisition, immunity, and behavior. Microbial community structure within the gut is heavily influenced by differences among gut regions in morphology and physiology, which determine the niches available for microbes to colonize. We present a high-resolution analysis of the structure ...
An exceptionally preserved new ostracod crustacean from the Silurian of Herefordshire, UK, represents only the third fully documented Palaeozoic ostracod with soft-part preservation. Appendages, gills, gut system, lateral compound eyes and even a medial eye with a Bellonci organ are preserved, allowing assignment of the fossil to a new genus and species of cylindroleberidid myodocope (Myodocopi...
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