Cover image supplied by Carolina Tropini, Sonnenburg Group, Stanford University, USA, who is funded by a James S. McDonnell fellowship. Fluorescent in situ hybridization of mouse colon colonized with gnotobiotic microbiota. Tissue was stained by DAPI and the mucus labelled with UEA-1 (Ulex europaeus agglutinin I), bacteria were labelled with fluorescent DNA probes.

Cover image supplied by Carolina Tropini, Sonnenburg Group, Stanford University, USA, who is funded by a James S. McDonnell fellowship. Fluorescent in situ hybridization of mouse colon colonized with gnotobiotic microbiota. Tissue was stained by DAPI and the mucus labelled with UEA-1 (Ulex europaeus agglutinin I), bacteria were labelled with fluorescent DNA probes.

Cover image supplied by Carolina Tropini, Sonnenburg Group, Stanford University, USA, who is funded by a James S. McDonnell fellowship. Fluorescent in situ hybridization of mouse colon colonized with gnotobiotic microbiota. Tissue was stained by DAPI and the mucus labelled with UEA-1 (Ulex europaeus agglutinin I), bacteria were labelled with fluorescent DNA probes.

Cover image supplied by Carolina Tropini, Sonnenburg Group, Stanford University, USA, who is funded by a James S. McDonnell fellowship. Fluorescent in situ hybridization of mouse colon colonized with gnotobiotic microbiota. Tissue was stained by DAPI and the mucus labelled with UEA-1 (Ulex europaeus agglutinin I), bacteria were labelled with fluorescent DNA probes.

Cover image supplied by Carolina Tropini, Sonnenburg Group, Stanford University, USA, who is funded by a James S. McDonnell fellowship. Fluorescent in situ hybridization of mouse colon colonized with gnotobiotic microbiota. Tissue was stained by DAPI and the mucus labelled with UEA-1 (Ulex europaeus agglutinin I), bacteria were labelled with fluorescent DNA probes.

Cover image supplied by Carolina Tropini, Sonnenburg Group, Stanford University, USA, who is funded by a James S. McDonnell fellowship. Fluorescent in situ hybridization of mouse colon colonized with gnotobiotic microbiota. Tissue was stained by DAPI and the mucus labelled with UEA-1 (Ulex europaeus agglutinin I), bacteria were labelled with fluorescent DNA probes.

Cover image supplied by Carolina Tropini, Sonnenburg Group, Stanford University, USA, who is funded by a James S. McDonnell fellowship. Fluorescent in situ hybridization of mouse colon colonized with gnotobiotic microbiota. Tissue was stained by DAPI and the mucus labelled with UEA-1 (Ulex europaeus agglutinin I), bacteria were labelled with fluorescent DNA probes.

Cover image supplied by Carolina Tropini, Sonnenburg Group, Stanford University, USA, who is funded by a James S. McDonnell fellowship. Fluorescent in situ hybridization of mouse colon colonized with gnotobiotic microbiota. Tissue was stained by DAPI and the mucus labelled with UEA-1 (Ulex europaeus agglutinin I), bacteria were labelled with fluorescent DNA probes.

Cover image supplied by Carolina Tropini, Sonnenburg Group, Stanford University, USA, who is funded by a James S. McDonnell fellowship. Fluorescent in situ hybridization of mouse colon colonized with gnotobiotic microbiota. Tissue was stained by DAPI and the mucus labelled with UEA-1 (Ulex europaeus agglutinin I), bacteria were labelled with fluorescent DNA probes.

Cover image supplied by Carolina Tropini, Sonnenburg Group, Stanford University, USA, who is funded by a James S. McDonnell fellowship. Fluorescent in situ hybridization of mouse colon colonized with gnotobiotic microbiota. Tissue was stained by DAPI and the mucus labelled with UEA-1 (Ulex europaeus agglutinin I), bacteria were labelled with fluorescent DNA probes.

Cover image supplied by Carolina Tropini, Sonnenburg Group, Stanford University, USA, who is funded by a James S. McDonnell fellowship. Fluorescent in situ hybridization of mouse colon colonized with gnotobiotic microbiota. Tissue was stained by DAPI and the mucus labelled with UEA-1 (Ulex europaeus agglutinin I), bacteria were labelled with fluorescent DNA probes.

Cover image supplied by Carolina Tropini, Sonnenburg Group, Stanford University, USA, who is funded by a James S. McDonnell fellowship. Fluorescent in situ hybridization of mouse colon colonized with gnotobiotic microbiota. Tissue was stained by DAPI and the mucus labelled with UEA-1 (Ulex europaeus agglutinin I), bacteria were labelled with fluorescent DNA probes.