TY - ADVS ED - Cogito Learning Media. TI - A nematode as a model organism: the genetics of programmed cell death SN - 1888902140 PY - 1996/// CY - New York PB - Cogito Learning Media, Inc. KW - Nematodes N1 - Growing, Observing, and Handling Worms- - Genetic Crosses; H. Robert Horvitz ER -