1 Tract Tracing for the 1990s.- 2 Use of Retrograde Fluorescent Tracers in Combination with Immunohistochemical Methods.- 3 The PHA-L Anterograde Axonal Tracing Method.- 4 Combinations of Tracer Techniques, Especially HRP and PHA-L, with Transmitter Identification for Correlated Light and Electron Microscopic Studies.- 5 Interchangeable Uses of Autoradiographic and Peroxidase Markers for Electron Microscopic Detection of Neuronal Pathways and Transmitter-Related Antigens in Single Sections.- 6 Electron microscopic Preembedding Double-Immunostaining Methods.- 7 Intracellular Labeling and Immunocytochemistry.- 8 Synaptic Relationships of Golgi-Impregnated Neurons as Identified by Electrophysiological or Immunocytochemical Techniques.- 9 Immunocytochemistry and Synaptic Relationships of Physiologically Characterized HRP-Filled Neurons.- 10 In Situ Hybridization Combined with Retrograde Fluorescent Tract Tracing.- 11 Microdissection in Combination with Biochemical Microassays as a Tool in Tract Tracing.- 12 Receptor Autoradiography.- 13 Processing and Analysis of Neuroanatomical Images.