brain slices from cerebellum , brain stem , and forebrain of rabbits 2 , 7 , 14 , 30 , 90 , 500 , and 2500 days of age were incubated for various times in artificial csf containing 3 nm- [ 3h ] thymidine at 37 degrees c under 95 % o2-5 % co2 .
C0006104
brain
C0085140
forebrain