The brain ventricular system (red) contains cerebrospinal fluid, which circulates throughout the brain and spinal cord. This fluid provides buoyancy and cushioning to protect the nervous tissue, as well as bringing nutrients and removing waste.
Two day old transgenic zebrafish show green fluorescent protein to mark where certain neuron types are born in the eye, the nose, and certain parts of the brain.
Two day old transgenic zebrafish show green fluorescent protein to mark where certain neuron types are born in the eye, the nose, and certain parts of the brain.
Axon tracts are bundles of nerve fibers that connect different regions of the brain to one another and to the spinal cord. The tracts are labeled here in green in 1.5 day old zebrafish embryos