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A histological study of the regenerative response in a lizard,Anolis carolinensis

✍ Scribed by Zika, Jocelyn M.

Publisher
John Wiley and Sons
Year
1969
Tongue
English
Weight
728 KB
Volume
172
Category
Article
ISSN
0022-104X

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✦ Synopsis

Amputated hyperinnervated Anolis carolinensis limbs were studied histologically at various times from early stages of post-amputational wound healing to formation of mature mounds. Comparable stages of normally innervated amputated limbs were also studied. The sequence of events involved in tissue repair was found to be similar in both groups. The mounded adigital outgrowths which were produced on the hyperinnervated limbs were composed, in 80% of the cases, of large amounts of connective tissue or bone, whereas the other 20% contained primarily nerve fascicles and adipose tissue. The mounds were formed as the result of extensive regeneration of individual tissues without the interposition of a mesenchymatous cell blastema. It was concluded that the regenerative response shown by the hyperinnervated Anolis limb differs from the de novo regeneration seen in urodele amphibians. Whether this hyperinnervation procedure accurately tests the influence of nerve tissue on reptilian limb regeneration is discussed.

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