1. Bauer, U., Dudel, J., andHatt, H. 1981. Characteristics of single chemoreceptive units sensitive to amino acids and related substances in the crayfish leg.J. Comp. Physiol. 144:67?74.
2. Caprio, J. 1982. High sensitivity and specificity of olfactory and gustatory receptors of catfish to amino acids, pp. 109?134,in T.J. Hara (ed.). Chemoreception in Fishes. Elsevier, New York.
3. Dixon, M., andWebb, E.C. 1979. Enzymes. Academic Press, New York.
4. Edsall, J.T. 1943a. Dipolar ions and acid-base equilibria, pp. 75?115,in E.J. Cohn and J.T. Edsall (eds.). Proteins, Amino Acids and Peptides. Reinhold, New York.
5. Edsall, J.T. 1943b. Proteins as acids and bases, pp. 444?505,in E.J. Cohn and J.T. Edsall (eds.). Proteins, Amino Acids and Peptides. Reinhold, New York.