Synthesis of glutathione responsive, amphiphilic methotrexate based prodrug nanoparticles: In vitro and in vivo assessment against metastatic breast cancer ScienceDirect Whey protein concentrate ameliorates the methotrexate induced liver and kidney damage British Journal of Nutrition Cambridge Core Pharmacokinetics of oral and subcutaneous methotrexate in red and white blood cells in patients with early rheumatoid arthritis: the methotrexate monitoring trial Annals of the Rheumatic Diseases Exploring the potentials of chitosan as a promising carrier for methotrexate for beating cancer ScienceDirect