Fig. 2

A. castellanii cells transfected with pGAPDH-EGFP. A. Cells were imaged using fluorescence microscopy with a DAPI filter to visualize DNA stained with DAPI. B. Cells were imaged using fluorescence microscopy using a GFP filter to visualize EGFP expression. C. A merge of the DAPI and GFP images shown. All cells were imaged using 630X total magnification. All scale bars represent 20 μm