title: How much flexibility is possible when validating new in vivo and in vitro toxicity test methods?
authors.forename: Robert D
authors.initials: RD
authors.lastname: Combes
authors.forename: Michael
authors.initials: M
authors.lastname: Balls
mesh_terms: D032761:Animal Experimentation / Q000592:standards*; D000818:Animals; D007390:International Agencies; D015203:Reproducibility of Results; D018675:Toxicity Tests / Q000379:methods*