ABSTRACT Toll like receptors are the primary component of innate immune response. The comparison of expression of innate immune genes TLR 1 - 10 was carried out by real time PCR by quantifying mRNA in bovine PBMCs. The bovine PBMCs in vitro stimulated with FMD infectious virus lead to up regulation of TLR 2, 3, 4 and down regulation of TLR 9. But stimulation with DNA vaccine carryingVP1 genes of FMDV leads to up regulation of TLR 2 only. Difference in the TLR gene expression by the virus and DNA vaccine, may be related to the outcome of the vaccine and carrier or persistent state of the animal which is seen in FMDV.
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