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Shepard, C. C. and Hottle, G. A. (1949). J. biol. Ghent. 179, 349.
Shimizu, H., Kuretani, K. and Ugami, S. (1957). Tohoku J. agric. Res* 7, 331.
(Not seen. Biol. Abat. (1958) 22987.)
Sluiter, J . W. (1940). Protoplasma 34, 393.
Smith, A. H. (1959). Poult. Sei. 38,1437.
Solomon, J. B. (1957). Biochim. biophys. Acta 24, 584.
Solomon, J. B. (1958). Biochem. J. 70, 529.
Solomon, J. B. (1959). Devi. Biol. 1, 182.
Solomon, J. B. (1963). J. Embryol. exp. Morph. 11, 591.
Sotelo, J. R. and Porter, K. R. (1959). J. biophys. biochem. Cytol. 5, 327.
Spratt, N. T. (1948). J. exp. Zool. 107, 39.
Spratt, N. T. (1949). J. exp. Zool. 110, 273.
Spratt, N. T. (1950). Biol. Bull. 99,120.
Spratt, N. T. (1956). In 'Embryonic Nutrition' (D. Rudnick, ed.), pp. 72-86.
Chicago University Press.
Stieve, H. (1918). Arch. EntwMech. Organ. 44, 530.
Stoeckenius, W. (1959). J. biophys. biochem. Cytol. 5, 491.
Sung, Hwan Sun (1961). Exp. Cell Res. 25, 702.
Swiezawska, K. (1949). Bull. Acad. pol. Sei. Lett. BII, 201.
Taylor, R. M. and Saenz, A. C. (1949). J. Immunol. 63, 319.
Thomas, J. A. (1938). Ann. Sei. Nat. Zool. 1, 210.
Thompson, A. (1859). Ovum. In 'Cyclopaedia of Anatomy and Physiology' (R. B.
Todd, ed.), Vol. 5, pp. 1-142. Sherwood, Gilbert and Piper, London.
Tsuji, F . L, Brin, M. and Williams, H. H. (1955). Arch. Biochem. Biophys. 56, 290.
Tsuneo, A., Kaneko, T., Tanabe, Y. and Hosada, T. (1962). Bull. not. Inst. agric.
Sci.Ser.G,21,61.
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Van Deth, J. H. M. G. ( 1963). Aust. J. exp. Biol. med. Sei. 41, 129.
Van Durme, M. (1914). Arch. Biol. 29, 71.
Varma, D. N. (1954). Univ. Allahabad Studies (Zool.) 7. (Cited in Biol. Abstr. (1956)
9626.)
Virchow, H. (1891). Int. Beitr. wiss. Med. 1, 227.
Waddington, C. H. (1932). Phil. Trans. B 221, 179.
Wallace, R. A. ( 1963). Biochim. biophys. Acta 74, 505.
Ward, R. T. (1962). J. Cell Biol. 14, 309.
Warner, R. C. (1954). In 'The Proteins' (H. Neurath and K. Bailey, eds.), pp. 435485. Academic Press, New York.
Warren, D. C. (1949). In 'Fertility and Hatchability of Chicken and Turkey Eggs'
(L. W. Taylor, ed.). John Wiley, New York.
Warren, D. C. and Conrad, R. M. (1939). J. Agric. Res. 58, 875.
Wartenberg, H. (1962). Z. Zellforsch. 58, 427.
Wartenberg, H. and Stegner, H. E. (1962). Anat. Anz. 109, 390.
Webster, R. A. and Ward, R. T. (1953). Arch. Biochem. Biophys. 45, 384.
Williams, J . (1962a). Biochem. J. 83, 346.
Williams, J. (1962b). Biochem. J. 83, 355.
Williams, J. (1964). In 'Biochemical Aspects of Development' (R. Weber, ed.).
Academic Press, New York. (In press).
Williams, M. A., da Costa, W. A., Newman, L. H. and Marshall, L. H. (1954).
Nature, Lond. 173, 490.
271
Schwann, T. (1847). 'Microscopical Researches into the Accordance into the Structure and Growth of Animals and Plants.' Sydenham Society, London.
Shepard, C. C. and Hottle, G. A. (1949). J. biol. Ghent. 179, 349.
Shimizu, H., Kuretani, K. and Ugami, S. (1957). Tohoku J. agric. Res* 7, 331.
(Not seen. Biol. Abat. (1958) 22987.)
Sluiter, J . W. (1940). Protoplasma 34, 393.
Smith, A. H. (1959). Poult. Sei. 38,1437.
Solomon, J. B. (1957). Biochim. biophys. Acta 24, 584.
Solomon, J. B. (1958). Biochem. J. 70, 529.
Solomon, J. B. (1959). Devi. Biol. 1, 182.
Solomon, J. B. (1963). J. Embryol. exp. Morph. 11, 591.
Sotelo, J. R. and Porter, K. R. (1959). J. biophys. biochem. Cytol. 5, 327.
Spratt, N. T. (1948). J. exp. Zool. 107, 39.
Spratt, N. T. (1949). J. exp. Zool. 110, 273.
Spratt, N. T. (1950). Biol. Bull. 99,120.
Spratt, N. T. (1956). In 'Embryonic Nutrition' (D. Rudnick, ed.), pp. 72-86.
Chicago University Press.
Stieve, H. (1918). Arch. EntwMech. Organ. 44, 530.
Stoeckenius, W. (1959). J. biophys. biochem. Cytol. 5, 491.
Sung, Hwan Sun (1961). Exp. Cell Res. 25, 702.
Swiezawska, K. (1949). Bull. Acad. pol. Sei. Lett. BII, 201.
Taylor, R. M. and Saenz, A. C. (1949). J. Immunol. 63, 319.
Thomas, J. A. (1938). Ann. Sei. Nat. Zool. 1, 210.
Thompson, A. (1859). Ovum. In 'Cyclopaedia of Anatomy and Physiology' (R. B.
Todd, ed.), Vol. 5, pp. 1-142. Sherwood, Gilbert and Piper, London.
Tsuji, F . L, Brin, M. and Williams, H. H. (1955). Arch. Biochem. Biophys. 56, 290.
Tsuneo, A., Kaneko, T., Tanabe, Y. and Hosada, T. (1962). Bull. not. Inst. agric.
Sci.Ser.G,21,61.
Urban, W. D. (1955). J. Amer. vet. med. Ass. 127, 233.
Van Deth, J. H. M. G. ( 1963). Aust. J. exp. Biol. med. Sei. 41, 129.
Van Durme, M. (1914). Arch. Biol. 29, 71.
Varma, D. N. (1954). Univ. Allahabad Studies (Zool.) 7. (Cited in Biol. Abstr. (1956)
9626.)
Virchow, H. (1891). Int. Beitr. wiss. Med. 1, 227.
Waddington, C. H. (1932). Phil. Trans. B 221, 179.
Wallace, R. A. ( 1963). Biochim. biophys. Acta 74, 505.
Ward, R. T. (1962). J. Cell Biol. 14, 309.
Warner, R. C. (1954). In 'The Proteins' (H. Neurath and K. Bailey, eds.), pp. 435485. Academic Press, New York.
Warren, D. C. (1949). In 'Fertility and Hatchability of Chicken and Turkey Eggs'
(L. W. Taylor, ed.). John Wiley, New York.
Warren, D. C. and Conrad, R. M. (1939). J. Agric. Res. 58, 875.
Wartenberg, H. (1962). Z. Zellforsch. 58, 427.
Wartenberg, H. and Stegner, H. E. (1962). Anat. Anz. 109, 390.
Webster, R. A. and Ward, R. T. (1953). Arch. Biochem. Biophys. 45, 384.
Williams, J . (1962a). Biochem. J. 83, 346.
Williams, J. (1962b). Biochem. J. 83, 355.
Williams, J. (1964). In 'Biochemical Aspects of Development' (R. Weber, ed.).
Academic Press, New York. (In press).
Williams, M. A., da Costa, W. A., Newman, L. H. and Marshall, L. H. (1954).
Nature, Lond. 173, 490.