Petersen, E.J., Nguyen, A., Brown, J., Elliott, J.T., Clippinger, A.J., Gordon, J., Kleinstreuer, N. and Roesslein, M. 2021. Characteristics to consider when selecting a positive control material for an in vitro assay. ALTEX - Alternatives to animal experimentation. 38, 2 (Apr. 2021), 365–376. DOI:https://doi.org/10.14573/altex.2102111.