To determine if γδ T cells are induced subsequent B. abortus infection, C57BL/6 mice were infected with 5×104 CFUs of B. abortus, and the relative proportions of TCRγδ+, TCRαβ+, CD4+, and CD8+ T cells were determined at varying time points post-infection when compared to splenic T cells of naïve mice. The gene discussed is CD4; the disease is infection.