jan 1, 1950 - Delaney Clause
Description:
The etiology of lymphomas, leukemias and cervical cancer may be viruses. The Delaney Clause was designed to protect against these many cancer types. It was based on the hypothesis held in the 1950s that human cancers are due to environmental chemicals.Added to timeline:
Date:
jan 1, 1950
Now
~ 75 years ago