Fig. 5From: Small RNA expression from viruses, bacteria and human miRNAs in colon cancer tissue and its association with microsatellite instability and tumor locationIn situ hybridization (ISH) of CRC formalin-fixed paraffin-embedded (FFPE) tissue from two patients (left and right). ISH staining of a small RNA fragment from (a, b) F. nucleatum, (c, d) U6 positive control, and (e, f) scramble negative control. For patient 1, part of the section included non-tumor cells, which is indicated by the dashed lineBack to article page