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Photomicrographs of hematoxylin-eosin (HE) and immunohistochemical staining for GK-1 location and BrdU incorporation from sections of MLN (A) and PP (B) of mice primed with GK-1, BLS-GK-1, or GK-1 plus BLS and boosted with GK-1 alone. At 24 h after the last immunization, mice were fed BrdU and the PP, MLN, and spleens were obtained and fixed and embedded in paraffin. E, enterocytes. Data are representative of the images observed in several slides of each experimental group.
