FIG 4.

Heteroresistant cells are more readily internalized by macrophages but are more able to protect against oxidative burst. (A) The heteroresistant cells possessed lower cellular charges. (B) Phagocytic index. (C) Intracellular proliferation rate. Statistically significant differences between the original cells and their heteroresistant clones are represented by the horizontal lines (P < 0.05). Significant differences between the original L135/03 and L127/01 cells are represented by one asterisk (P < 0.05) and those between L135/03 and L127/01 heteroresistant clones by two asterisks (P < 0.05). Data represent the means ± SE from two independent experiments consisting of triplicate assays. O, original; H, heteroresistant.