FIG 5 .

Acinetobacter colonizes the colonic crypt. (A) qRT-PCR amplification using phylum- and family-specific primers with DNA extracted from the feces of SPF C57BL/6 mice or from germfree BALB/c mice before and after 7, 15, and 26 days of colonization with conventional microbiota. (B and C) Warthin-Starry (B) or FISH using an Alexa555-labeled Acinetobacter-specific probe (C) on colonic crypt sections after 26 days of colonization of germfree BALB/c mice with a conventional microbiota. Scale bars, 10 µM.