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Presumptive stomach cells of the starfish embryo are shown to sort out and to occupy a position in the endoderm of the reconstructed embryo. A new method is introduced to specifically mark these cells by staining the embryo with a fluorescent dye, 8-anilino-1-naphthalenesulfonic acid (1,8-ANS).
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Dan‐Sohkawa et al. (1989) studied this question.
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