To trace the longer pathways that interconnect different brain regions, CBS labs developed a genetic method to label each individual nerve cell a different color to identify and track axons and dendrites over long distances.
Living neurons firing The micrograph shows living neuronal cells. In a gene-modified procedure different components of the cells are coloured by fluorescent proteins, so that two different structure components, tubulin and actin, obtain different colours.
Colored SEM of neurons in the corpus striatum of a fetal brain. Each neuron consists of a cell body (red) surrounded by dendrites and one axon. The corpus striatum forms part of the basal ganglia, deep in the cerebral hemispheres
Image of neurons and glial cells (non-neural brain cells) cultured in a Petri dish. The “skeleton” of neurons and glia – molecules called microtubules – are labeled in green and blue. Photograph: Uwe Konietzko, University of Zurich