In vitro proliferation of radial glia within isolated tectal tissue explanted from adult goldfish.

Radial glia located in tectal tissue isolated from adult goldfish retain the ability to incorporate exogenous thymidine into DNA up to 5 days in culture. The rate of their proliferation is maximally enhanced during reinnervation of the tectum by optic fibers about 5 weeks after unilateral optic nerve crush.