Patent ID: 8828725

Claim:
A culture medium for culturing neural cells, each neural cell comprising a neural cell body and at least one neurite branched from the neural cell body, the culture medium comprising: a substrate; and a carbon nanotube structure located on the substrate, the carbon nanotube structure comprising a plurality of carbon nanotube wires being spaced from each other and at least one second carbon nanotube linking between adjacent two of the carbon nanotube wires, each of the carbon nanotube wires comprising a plurality of first carbon nanotubes substantially oriented along an axial direction of the carbon nanotube wire, wherein the plurality of first carbon nanotubes in each of the plurality of carbon nanotube wires are joined end to end with each other along the axial direction of the carbon nanotube wire by van der Waals force, a distance between the adjacent two of the carbon nanotube wires is greater than or equal to a diameter of the neural cell body, and the plurality of carbon nanotube wires are capable of guiding extending directions of the neurites along the plurality of carbon nanotube wires.