1961 Vinblastine: a drug that binds to tubulin. Derived from the ornamental shrub, vinca rosea.
1963 Vincristine: a sister drug to Vinblastine.
1964 Melphalan (L-PAM) approved for marketing.
1966 NCI standardizes testing of cancer-causing chemicals.
1969 R. Heubner & G. Todaro propose the oncogene hypothesis.Decorative Image: Scientist in lab.