00598nas a2200133   4500000000100000000000100001000000100002008003900003260002000042100003700062245004800099856006500147520025200212       0                             d  cAugust 26, 20251 aU.S. National Toxicology Program00aAlternative Methods Accepted by US Agencies  uhttps://ntp.niehs.nih.gov/whatwestudy/niceatm/accept-methods3 aThis page lists alternative safety testing methods that are accepted by U.S. and international regulatory authorities, organized by testing category. Appropriate use of these methods and approaches can reduce animal use and improve animal welfare.