Table 5.

Neutralizing Ab titers to inoculated DENV-2 (DHF0663 strain) in marmosets using BHK and FcγR-expressing BHK cells

Animal identification	Days after inoculation (PRNT50 titers by BHK, FcγR-expressing BHK cells)
	0*	2	4	7	11	15	21
Group A (mAb 4G2)
A1	< 10, < 10	< 10, < 10	< 10, < 10	10, 10	10, 10	10, 10	20, 10
A2	< 10, < 10	< 10, < 10	< 10, < 10	10, < 10	10, 20	10, 10	10, ND
A3	< 10, < 10	< 10, < 10	< 10, < 10	10, < 10	20, 20	10, 10	10, 10
Group B (mAb 6B6C)
B1	10, < 10	10, < 10	10, < 10	10, < 10	10, 10	ND, 10	40, 10
B2	10, < 10	10, < 10	< 10, < 10	< 10, < 10	ND, ND	10, 10	40, 10
B3	< 10, < 10	< 10, < 10	10, < 10	10, < 10	10, 20	20, 10	10, ND
Control (saline)
C1	< 10, < 10	< 10, < 10	< 10, < 10	< 10, < 10	20, 20	10, 10	20, 10
C2	< 10, < 10	< 10, < 10	< 10, < 10	10, 10	ND, ND	10, 10	160, 10
C3	< 10, < 10	< 10, < 10	< 10, < 10	10, < 10	ND, ND	10, 10	40, 20
C4	< 10, < 10	< 10, < 10	< 10, < 10	10, < 10	ND, ND	10, 10	80, 40

Results are shown as reciprocal of the highest plasma dilution (end-point titer) that results in < 50% input of plaque count and were expressed as PRNT₅₀ values. ND = not determined because of low sample volumes.

^*Values after Ab or saline administration.