منابع مشابه
The Basement Lamella of Amphibian Skin
The basement lamella under the epidermis of amphibian larvae shows a sub-microscopic architecture of remarkable geometric regularity: It consists of about twenty layers of ground substance in which cylindrical fibers (presumably collagenous) of about 500 Angström diameter are embedded parallel to one another, but with the fiber directions alternating by 90 degrees from layer to layer. The repai...
متن کاملReplacement of the larval basement lamella by adult-type basement membrane in anuran skin during metamorphosis.
Ever since Gudernatsch (191. 3, 1914) proved that the mammalian thyroid gland contains an “ugerz~” which nil1 hasten metamorphosis when fed to amphibian larvae, biologists have been invtrstigating thcl mechanisms whereby the thyroid participates in controlling vertebrate development. Reviews by Allen ( 1938), Lynn and \I’achowski ( 1951 ), Etkin (1955), and Kollros (1959) should 1~ consulted fo...
متن کاملThe chemistry of poisons in amphibian skin.
Poisons are common in nature, where they often serve the organism in chemical defense. Such poisons either are produced de novo or are sequestered from dietary sources or symbiotic organisms. Among vertebrates, amphibians are notable for the wide range of noxious agents that are contained in granular skin glands. These compounds include amines, peptides, proteins, steroids, and both water-solub...
متن کاملCell Junctions in Amphibian Skin
Cell junctions have been investigated in the amphibian epidermis, a stratified squamous epithelium, and compared to those described previously in simple columnar epithelia of mammalian cavitary organs. In adult frogs and toads, and in larvae approaching metamorphosis, belts of membrane fusion or zonulae occludentes of considerable depth are regularly found between adjoining cells of the outermo...
متن کاملAnti-infection peptidomics of amphibian skin.
Peptidomics and genomics analyses were used to study an anti-infection array of peptides of amphibian skin. 372 cDNA sequences of antimicrobial peptides were characterized from a single individual skin of the frog Odorrana grahami that encode 107 novel antimicrobial peptides. This contribution almost triples the number of currently reported amphibian antimicrobial peptides. The peptides could b...
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: The Journal of Biophysical and Biochemical Cytology
سال: 1956
ISSN: 1540-8140,0021-9525
DOI: 10.1083/jcb.2.4.275