The impetus for compiling this book was the recent development of culture strains of neuroblastoma and glial cells and the immediate and enthusiastic way they have been taken up as model systems. After the first sudden rush of activity, it seems appropriate to pause, to assess progress, and to contemplate the future contributions that may be possible using these culture techniques. Long before the advent of established strains, cultures of nervous tissue had already contributed to neurobiology. Ross Harrison, in 1906, in a single experimental series, established tissue culture as a promising...