Figure 1: The effects of the crude cocktail L. major antigen preparation on spleen white pulp size in the groups LT, LB and LBT challenged with the live L. major ptomastigotes, compared to control group. Differences between LBT groups and three groups of LT, LB and control groups is significant statistically (P<0.05), but differences between three groups of LT, LB and control group is not significant (p>0.05).