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75. Connell, D. I.: Private Communication.

76. Connors, T. A., Elson, L. A. and Ross, W. C. J.: The Tumour Growth Inhibitory Activity of 1-Amino cyclopentane-l-carboxylie Acid and Related Peptides. Biochem. Pharmacol., 1: 239, 1958; see also Brit. Emp. Cancer Camp. Ann. Rep., 36, Pt. II: 6, 1958; J. Chem. Soc, p. 2119, 1960.

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