MIP and ocular melanoma: The batch consistency of M2 rT-Nm-MIP-liposome (n = 3) and M2 rT-Nm-MIP-liposome + MPLA (n = 3) vaccines was assessed initially by testing individual antisera in ELISA against the immunizing protein, homologous MC58 OM, and OM from a MC58 mip knock-out strain that was engineered to constitutively express the mip gene fragment encoding the truncated protein without the 6 × HIS tag (AA22-143).