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Cutaneous granular glands and amphibian venoms
Abstract Through gradual acquisition of a set of adaptations, both morphofunctional and behavioural, the first amphibians were able to spend longer periods in a terrestrial environment. TheExpand
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Cutaneous adaptations to water balance in amphibians
Abstract 1. 1. The integument of the amphibians is, in general terms, not adapted to a strictly terrestrial life, in that it does not serve as a barrier to a bidirectional water flow. 2. 2. One ofExpand
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Visual system evolution and the nature of the ancestral snake
The dominant hypothesis for the evolutionary origin of snakes from ‘lizards’ (non‐snake squamates) is that stem snakes acquired many snake features while passing through a profound burrowingExpand
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Parental investment by skin feeding in a caecilian amphibian
Although the initial growth and development of most multicellular animals depends on the provision of yolk, there are many varied contrivances by which animals provide additional or alternativeExpand
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Morphological and physiological specialization for digging in amphisbaenians, an ancient lineage of fossorial vertebrates
SUMMARY Amphisbaenians are legless reptiles that differ significantly from other vertebrate lineages. Most species dig underground galleries of similar diameter to that of the animal. We studied theExpand
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Morphology of the femoral glands in the lizard Ameiva ameiva (teiidae) and their possible role in semiochemical dispersion
Many lizards have epidermal glands in the cloacal or femoral region with semiochemical function related to sexual behavior and/or territorial demarcation. Externally, these glands are recognized as aExpand
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Antileishmanial and antitrypanosomal activity of bufadienolides isolated from the toad Rhinella jimi parotoid macrogland secretion.
Amphibian skin secretions are considered a rich source of biologically active compounds and are known to be rich in peptides, bufadienolides and alkaloids. Bufadienolides are cardioactive steroidsExpand
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Parotoid macroglands in toad (Rhinella jimi): their structure and functioning in passive defence.
When toads (Rhinella) are threatened they inflate their lungs and tilt the body towards the predator, exposing their parotoid macroglands. Venom discharge, however, needs a mechanical pressure ontoExpand
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Cytotoxic and antiproliferative effects of crude amphibian skin secretions on breast tumor cells
Abstract Amphibian skin secretions are rich sources of biologically active compounds, including antimicrobial peptides, alkaloids and steroids. Bufadienolidic steroids, for instance, may inhibitExpand
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The calcified dermal layer in anurans
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