Fig. 4

CARD-FISH imaging of different CPR clades. The panels show an overlap of the probe (green), DAPI (blue) and autofluorescence (red) signals. a, b ABY1 members from the GWF2-40-263 and UBA9934 families stained with 2 distinct probes (probe ABY1a-193 and ABY1b-1343). c–f Paceibacteria proposed genus GWA1-54-10 visualized with 2 probes (adl1-132 and adl2-134). h, i Bacteria affiliated to Gracilibacteria proposed genus 2-02-FULL-48-14 are observed using the Pgri-99 probe. j Organisms of the family level group LOWO2-01-FULL-3 (Gracilibacteria) stained with the Pgri-124 probe. k Members of the Saccharimonadia uncultivated family UBA10212 were observed using the SacA-77 probe. l, m Paceibacteria family level group UBA11359 was detected at the surface of other prokaryotes using the ZE-1429 probe