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The similarity between the cephalopod lens and the teleost (vertebrate) lens can be considered an optical example of convergent evolution. However, the embryology and ultrastructure of the cephalopod lens appear to be different from that of vertebrates, and perhaps unique to the animal kingdom. Using light and scanning electron microscopy, the morphogenesis of the squid (Loligo opalescens) lens is...
The zebrafish has become an important vertebrate model organism to study the development of the visual system. Mutagenesis projects have resulted in the identification of hundreds of eye mutants. Analysis of the phenotypes of these mutants relies on in depth knowledge of the embryogenesis in wild-type animals. While the morphological events leading to the formation of the retina and its connections...
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