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2. Differentiation of epidermis and epidermal derivatives;Wessells;New Eng. J. Med.,1967
3. The influence of embryonic mesoderm on regional specification of epidermal derivatives;Cairns;J. Exp. Zool,1954
4. The importance of mes-enchymal factors in differentiation of chick epidermis. II. Modification of epidermal differentiation by contact with different types of mesenchyme;McLoughlin;J. Embryol. Exp. Morph.,1961
5. Tissue interactions in scale and feather development as studied in epidermal-dermal recombinations;Rawles;J. Embryol. Exp. Morph.,1963