1 gen 1999 anni - The National Toxicology Program

Descrizione:

"headquartered at NIEHS, announced that Federal regulatory agencies — FDA, OSHA, EPA, and CPSC — would accept, for the first time, an alternative way to test chemicals for allergic contact dermatitis that could reduce by thousands the number of guinea pigs needed for such tests."

Aggiunto al nastro di tempo:

Data: