Images of GFP/Ap growing within various host cells. HL-60 (A) with partial bright field to illuminate the non fluorescent host cell. Tick cell ISE6 (B) expressing DSred and containing indistinct bacteria in morulae. Monkey RF/6A (C) and human HMEC-1 (D) endothelial cells expressing mCherry and containing GFP/Ap morulae with distinct bacteria. Bars 5 μm.