TABLE 2.

Absorbance values (A₄₅₀) of serum (dilution, 1:8,000) from pigs immunized with recombinant proteins^a

Pig inoculated (immunization)	A450 determined with recombinant protein on:
	D0		PID 14		PID 21		PID 42
	P46	P65c	P46	P65c	P46	P65c	P46	P65c
55 (GST − P46)	0	0	0.5	0	0.6	0	1.6	0
52 (GST − P46)	0	0	0.8	0	0.6	0	1.4	0.5
53 (GST − P65c)	0	0	0	1.5	0	1.0	0	2.0
57 (GST − P65c)	0	0	0	0.5	0	1.0	0	1.2
56 (P46+P65c)	0	0	0.5	0	0.95	0	2.0	1.5
58 (P46+P65c)	0	0	0.5	0	1.0	0	0.9	0.8
Control 1	0	0	0	0	0	0	0	0
Control 2	0	0	0	0	0	0	0	0

^aPigs were immunized by injection of individual or mixed P46 or P65_c recombinant proteins, and A₄₅₀ was determined by ELISA using either recombinant protein as the antigen.