Serum lymphocytic count in experimental sheep inoculated with various forms of RVF vaccines. (A) Serum lymphocytic count from pre day till 28th days of inoculation. (B) Serum Lymphocytic count from 2nd month till 12th month of inoculation. The data expressed as mean SEM, p<0.05. G1: Control negative, G2: Sheep inoculated with AlHV, G3: Sheep inoculated with Ch-NPsV, G4: Sheep inoculated with AlP-NPsV.