Cell viability of microglial cells after 48 hour incubation with human complement components (C1q, C1 inhibitor, C4, C5 and C9), both individually and in combination with each other; and a human complement standard containing complement components C1q, C2, C3, C4, C5, C6, C7, C8, C9 and factor B.

Cell viability was determined by MTT assay of cell proliferation and intracellular NAD levels (for complement standard samples). Replicates included n = 6 for cell proliferation measurements and, n = 3 for NAD concentrations. * p ≤ 0.05 vs Control, ** p ≤ 0.01 vs Control Cell viability of microglial cells after 48 hour incubation with human complement components (C1q, C1 inhibitor, C4, C5 and C9), both individually and in combination with each other; and a human complement standard containing complement components C1q, C2, C3, C4, C5, C6, C7, C8, C9 and factor B.