Table 2.

VEEV neutralizing antibody levels for pre-challenge sera samples in T cell transfer trial 4

Group description			PRNT50 (Day -1)
Recipient strain	T cell donor strain	No. positive/total tested	Percent positive (titer≥20)	Titer range	Geometric mean titer
αβ TCR KO	WT	12/15	80%	20 – 160	17
αβ TCR KO	None	0/9	0%	-	1

VEEV-specific antibody response was assessed by PRNT of individual sera samples in T Cell Transfer Trial 4 (described in Fig. 2D) obtained 24 hours (day -1) prior to VEEV challenge. The titer is reported as the reciprocal of the serum dilution corresponding to an endpoint of 50% plaque reduction. For PRNT values that were below the limit of detection (<20), an arbitrary value of 1 was used for calculation of the geometric mean titer, presented by group. ^a(), procedure to be performed; ^bN.D., not done.