Successful grafts were obtained when 15-day embryo rat eyes were transplanted into the brains of 2-day old rats. In the grafts differentiation of the various ocular tissues proceeded at the normal rate. The lens and retina first degenerate and then regenerate, the lens from its epithelium, the retina from its ciliary area. It was not possible to establish whether or not Wolffian regeneration of the lens can occur in the rat.
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Katharine Tansley (1946) studied this question.
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