00371nas a2200109   4500000000100000000000100001000000100002008004100003100003700044245012200081856005800203                                       d1 aNIH Office of Laboratory Welfare00aU.S. Government Principles for the Utilization and Care of Vertebrate Animals Used in Testing, Research, and Training  uhttps://olaw.nih.gov/policies-laws/gov-principles.htm