TABLE 1.

Opsonin concentrations in commercially available depleted sera

Type of serum	Manufacturer	Concn (ng/ml)
		MBL	Ficolin-1	Ficolin-2	Ficolin-3
Normal human serum	NAa	36	255	3,600	30,000
C1q-depleted serum	A	36	280	<64	16,800
C1q-depleted serum	B	56	300	<64	15,900
C1q-depleted serum	C	44	265	64	18,600
C2-depleted serum	C	52	200	<64	15,000
C3-depleted serum	C	44	175	<64	16,800
C4-depleted serum	C	26	140	<64	18,000
fB-depleted serum	C	16	25	<64	15,900

^aNA, not applicable.