effects of the following amino acids were examined on the electrical activity of the two giant neurones ( pon and tan ) identified in the subesophageal ganglia of achatina fulica ferussac : l-asp , l-thr , l-ser , l-glu , l-pro , gly , l-alpha-ala , beta-ala , l-cysteine , l-cystine , l-val , l-met , l-ileu , l-leu , l-tyr , l-phe , l-lys , l-his , l-arg , l-cit , l-try , gaba and gabob .
C0002520
amino acids
C0017890
gly