منابع مشابه
Holothurian Fucosylated Chondroitin Sulfate
Fucosylated chondroitin sulfate (FucCS) is a structurally distinct glycosaminoglycan found in sea cucumber species. It has the same backbone composition of alternating 4-linked glucuronic acid and 3-linked N-acetyl galactosamine residues within disaccharide repeating units as regularly found in mammalian chondroitin sulfates. However, FucCS has also sulfated fucosyl branching units 3-O-linked t...
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1. Stress-relaxation tests and creep tests were performed on the bodywall dermis of two sea cucumbers, Actinopyga echinites (Jager) and Holothuria leucospilota Brandt. 2. These viscoelastic connective tissues had mechanical properties which agreed well with those of a four-element mechanical model composed of two Maxwell elements connected in parallel. 3. The elastic stiffness of the dermis of ...
متن کاملExogonadal oogenesis in a temperate holothurian.
Unusual structures were detected on the visceral peritoneum of the ovarian tubules in about 5%-10% of female sea cucumbers (Cucumaria frondosa) collected off Newfoundland, eastern Canada. The condition varied from mild to severe, with localized castration observed in the most heavily affected tubule sections. Investigation of the structures using histology, transmission electron microscopy (TEM...
متن کاملProteases from the Regenerating Gut of the Holothurian Eupentacta fraudatrix
Four proteases with molecular masses of 132, 58, 53, and 47 kDa were detected in the digestive system of the holothurian Eupentacta fraudatrix. These proteases displayed the gelatinase activity and characteristics of zinc metalloproteinases. The 58 kDa protease had similar protease inhibitor sensitivity to that of mammalian matrix metalloproteinases. Zymographic assay revealed different lytic a...
متن کاملfictional names
fictional names have been one of the most important and serious topics in the contemporary philosophy of language and metaphysics.several questions such as “do fictional names refer to any objects?” “are fictional characters existent objects?” have resulted in a considerable literature of philosophy. in this essay, we will follow two objectives. first we will describe and elaborate the ideas ...
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ژورنال
عنوان ژورنال: Science
سال: 1907
ISSN: 0036-8075,1095-9203
DOI: 10.1126/science.26.664.379