CCL4 and infection: For example, some discrepancies in the expression pattern of chemokine genes such as Ccl3 and Ccl4, observed in BALB/c macrophages infected with either L. donovani or L. infantum/chagasi, may be a result of quantification at different times post-infection (96 and < 24 hours, respectively) instead of an inherent species-specific difference [12,15].