Ascidians

... These include non-vertebrate animals such as protozoans, clams and snails, insects, crabs and spiders. It also occurs in most chordates including ascidians, sharks and rays, fishes, amphibians (very common in this group), reptiles and mammals. What seems to be most important is that the organism ...

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Sabrina I am not that good in prochordates and donot know about the skin lesions as they donot interest me. Among animals, urochordates (e.g., ascidians) are unique in their ability to biosynthesize cellulose. In ascidians cellulose is synthesized in the epidermis and incorporated into a protective ...

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