DENNIS KUNKEL MICROSCOPY / SCIENCE PHOTO LIBRARY DENNIS KUNKEL MICROSCOPY / SCIENCE PHOTO LIBRARY
Brightfield light micrograph of interneuron (left) and pyramidal neuron (right) in the mammalian hippocampus CA1 region, stained with Cajal Golgi stain. The interneuron (inhibitory interneuron) is oval in shape with multiple dendrites projecting in to the basal CA1 region. A single axon is seen projecting in to the CA1 pyramidal cell and dendritic layers. The hippocampus pyramidal neuron (excitatory neuron) has a triangular cell body with a large primary dendrite (apical dendrite) extending from the cell body. It also has several dendrites projecting into the basal CA1 region. One long axon usually extends from this basal region. Dendrites gather information for processing by the cell body. After processing, information is passed on through the cell's axon. The hippocampus plays important roles in the consolidation of information from short-term memory to long-term memory and spatial navigation. Magnification: x80 when shortest axis printed at 25.
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