x1 = C3
x2 = C3b
x3 = C3bB_closed
x4 = C3bB_open
x5 = C3bBb
x6 = C3bBbH
x7 = Bb
x8 = Factor_H
x9 = Factor_B
x10 = C3bH
x11 = Factor_I
x12 = iC3b
x13 = Factor_D
x14 = Properdin
x15 = C3bBP_closed
x16 = C3bBP_open
x17 = C3bBbP
x18 = C3bP
x19 = C3b_total
x20 = C3bB_closed_total
x21 = C3bB_open_total
x22 = C3bBb_total