Table 1. Neutralizing antibody response against FMDV C-S8c1, in mice, after vaccination with C-S8p260.

C-S8p260a	Neutralization titer (PRN70)b
107 PFUs	30 days PIc	3 days PCd
Mouse #
1	2.0	1.8
2	2.0	2.0
3	2.4	2.2
4	2.1	1.9
5	1.3	1.5
6	1.7	1.8
7	0.4	1.9
8	1.7	1.8
9	2.7	2.4
10	1.9	1.9
103 PFUs
Mouse #
20	2.0	1.9
21	2.1	1.8
22	<0	1.8
23	1.7	1.8
24	1.4	2.4
25	1.6	1.8
26	1.4	1.8
27	0.6	1.1
28	1.4	1.5
29	1.7	1.8

^aMice were vaccinated with 10⁷ PFUs or 10³ PFUs of C-S8p260, indicated for each group.

^bNeutralization titers are expressed as PRN70 (plaque-reduction neutralization titer 70): the reciprocal of the dilution of serum that causes neutralization of 70% of PFU.

^c30 days post-immunization.

^d3 days post-challenge with 10⁴ PFUs of C-S8c1.