furthermore , [ 203hg ] mehg uptake at 15 s after intracarotid injections in the rat was stereospecific to the neutral amino acid carrier , as 203hg uptake across the bbb was not inhibited by coinjections of [ 203hg ] mehgcl with aspartic acid , an acidic amino acid .
C0004015
aspartic acid
C0815040
acidic amino acid