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Log reductions in tear fluid without or with calcium (1 mM). Calcium present in the artificial tear fluid inactivated the antimicrobial effects of lauric acid (12:0), sodium dodecanoate (12:0Na), and tridecanoic acid (13:0). The calcium ions also affected palmitoleic acid (16:1) and linolenic acid (18:3) but to a lesser extent. Myristoleic acid (14:1) and monocaprin (C10MG) were unaffected by the presence of calcium in the artificial tear fluid.
