I. Acetylcholinesterase histochemistry (L.L. Butcher). II. Fluorescence histochemistry of biogenic monoamines (A. Bjorklund). III. Ultrastructural visualization of biogenic monoamines (G. Richards). IV. Methods for immunocytochemistry of neurohormonal peptides (L.-I. Larsson). V. Immunocytochemistry: preparation of antibodies and staining specificity (M.V. Sofroniew, R. Couture and A.C. Cuello). VI. Combination of retrograde tracing and neurotransmitter histochemistry (T. Hokfelt, G. Skagerberg, L. Skirboll and A. Bjorklund). VII. The use of radioautography for investigating transmitter-specific neurons (L. Descarries and A. Beaudet). VIII. Neuronal tracing using retrograde migration of labeled transmitter-related compounds (M. Cuenod and P. Streit). IX. Autoradiographic localization of drug and neurotransmitter receptors (M.J. Kuhar). X. Metabolic mapping of functional activity in the central nervous system by measurement of local glucose utilization with radioactive deoxyglucose (L. Sokoloff, C. Kennedy and C.B. Smith). XI. Localization of steroid hormone target neurons by autoradiography (M. Sar and W.E. Stumpf). XII. Chemical lesioning techniques: monoamine neurotoxins (G. Jonsson). XIII. The use of excitatory amino acids as selective neurotoxins (J.T. Coyle and R. Schwarcz). Subject index.