TBEV-specific antibody responses in BALB/c, CcS-11 and STS mouse sera (
= 3 mice per group) after s.c. inoculation of TBEV. The plaque reduction neutralization test in PS cells was used to quantitate anti-TBEV neutralizing antibodies. Data are expressed as the geometric mean titer (GMT) + standard deviation. *p < 0.05; **p < 0.005, ***p < 0.0005.