Human trisomy 21 fibroblasts rescue methotrexate toxic effect after treatment with 5-methyl-tetrahydrofolate and 5-formyl-tetrahydrofolate. - Vitale L; Serpieri V; Lauriola M; Piovesan A; Antonaros F; Cicchini E; Locatelli C; Cocchi G; Strippoli P; Caracausi M (Journal of cellular physiology, 2019)