Nature 264, 482 - 483 (02 December 1976); doi:10.1038/264482a0

Annihilation of positrons in D and L isomers of various amino acids

ARTHUR RICH

Department of Physics, The University of Michigan, Ann Arbor, Michigan 48109

GARAY et al. ¹ have reported on experiments on positron annihilation in D and L isomers of various amino acids. I show here that one of the two interpretations which they put forward to explain their results is in error, and also discuss other possible experiments which may enable clarification of the rather unusual results they have reported.

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