Fig. 4.

Blastocystis ST4 colonizes asymptomatically in Rag1^−/− mice. a Experimental design. b Scanning electron microscopy (SEM) of colonic and cecum tissues from control and ST4-clonized mice, Blastocystis are indicated with red asterisk (*). Scale bar = 1 μm. c Representative micrographs of H&E-stained colon sections from ST4-colonized and control mice at day 14. Scale bar = 100 μm. d Colon length and colonic histological scores at endpoint. Blastocystis ST4 cells per milligram of stool in ST4-clonized mice