Automated Amino Acid Analysis -- Gas Chromatographic Analysis of Amino Acids -- Gas Chromatography—Mass Fragmentography of Amino Acids -- Double-Isotope Dansyl Microassay for Cerebral Amino Acids -- Liquid Chromatographic Determination of Amino Acids After Precolumn Fluorescence Derivatization -- Radioreceptor Assays for Amino Acids and Related Compounds -- Immunocytochemical Techniques -- In vitro Autoradiographic Localization of Amino Acid Receptors and Uptake Sites -- Determination of Transmitter Amino Acid Turnover -- Uptake and Release of Amino Acid Neurotransmitters.