3T3-L1 murine adipocytes have been fundamental in metabolic disease research for over 30 years. Originally derived from Swiss mouse embryo tissue by Dr. Howard Green of Harvard Medical School, the 3T3-L1 system has been pivotal in advancing the understanding of basic cellular mechanisms associated with diabetes, obesity and related disorders. We now offer both Cryopreserved and Plated sub-confluent 3T3-L1 preadipocytes in 96 well format and media for proliferation, differentiation, maintenance of 3T3-L1 preadipocytes to adipocytes. We also offer media and reagent kits validated using 3T3-L1 and/or primary rodent preadipocytes and adipocytes. High quality control tested 3T3-L1 preadipocytes designed to work consistently using Bioarray's line of 3T3-L1 media.