FIG. 2.

Localization of GROα transcripts in bovine ileal Peyer's patches by in situ hybridization. The brown signal is produced by hybridization with GROα-specific mRNA, and slides were counterstained with hematoxylin to visualize cells (blue signal). (A) Section of bovine ileal Peyer's patches 1 h after infection with the serotype Typhimurium wild type (IR715). The insert shows a section at a lower magnification. (B) Section of bovine ileal Peyer's patches 1 h after inoculation with sterile LB broth. The insert shows a section at a lower magnification.