To examine whether sialylation had any effect on bactericidal activity, we grew strain P9-17 and FA1090 in the presence of cytidine monophospho-N-acetylneuraminic acid (CMP-NANA) (33, 34) and subsequently tested representative anti-rNg-ACP sera (raised to mature rNg-ACP with ZW 3-14 plus MPLA) and anti-OM sera [raised to 10 μg of P9-17 OM adsorbed to Al(OH)3 preparation] in hSBA, alongside testing the antisera against nonsialylated bacteria. The gene discussed is NDUFAB1; the disease is ocular melanoma.