Fig. 3: Micrographs of concentrated Quinella cells labelled with probes targeting rRNA.
From: Genomic insights into the physiology of Quinella, an iconic uncultured rumen bacterium

The preparation was enriched for large cells using a sample from the rumen of a sheep with a large population of Quinella. a Phase contrast image of the enriched preparation. b The same field showing cells that hybridised with the Cy3-labelled universal bacterial probe EUB338. c The same field showing cells that hybridised with the Alexa 488-labelled Quinella-specific probe Quin1231. The scale bar indicates a distance of 10 μm. This image was selected to illustrate the binding of probe Quin1231 to the large oval cells, and similar results were obtained using rumen samples from 6 other sheep.