Sciences), and MC38 was cultured in DMEM media (Gibco), each supplemented with
10% v/v heat-inactivated FCS (Atlanta Biologicals), 100 U/mL penicillin, 100
μg/mL streptomycin (Gibco), 1× non-essential amino acids (GE Life
Sciences), and 1 mM sodium pyruvate (GE Life Sciences). B16.OVA media was
supplemented with 0.5 mg/mL G418. For each tumor cell implantation, a frozen
aliquot was thawed, passaged once, and harvested using trypsin EDTA (Gibco),
quenched with HI-FCS, washed in PBS, and implanted subcutaneously in sterile
PBS. Tumors were measured using digital calipers twice per week, and tumor
volume was estimated using the formula [tumor volume = short × short
× long / 2]. Animals were euthanized when tumors reached size criteria
(1000 mm3 or 2000 mm3).