 Among the members were Max Delbrück (1906–1981) who founded a course on bacteriophages at Cold Spring Harbor Laboratory.Other key members of the Phage Group included Salvador Luria (1912–1991) and Alfred Hershey (1908–1997).During the 1950s, Hershey and Chase made important discoveries on the replication of DNA during their studies on a bacteriophage called T2.