Fig. 3

Apoptosis in colon cancer induction by Plasmodium infection. a Apoptosis was observed under a fluorescence microscope (×400). b Quantitative estimation of the proportion of apoptotic cells in each group (t-test, t(8) = 22.31, P < 0.0001). Green fluorescence indicates the TUNEL-positive nuclei, blue represents DAPI stained nuclei, and a blend indicates apoptotic cells. The results are shown as mean ± SEM (n = 5). Scale bar = 50 µm. **** P < 0.0001