However, at 24 h of infection with persister cells, a bi-modal trend was present in IL-6 (Fig. 7A) and CXCL-8 (Fig. 8C) with an overall increase in secretion, compared to 1.5 h, while IL-10 was at levels identical to uninfected macrophages (Fig. 7D). The gene discussed is CXCL8; the disease is infection.