FIG. 2.

UTI by E. coli Dr⁺ in C3H/HeJ mice leads to massive inflammatory response in placenta. Representative placental pathology in sections obtained from mice infected at 35% gestation with E. coli Dr⁺ and undergoing preterm labor revealed massive infiltration of PMNs. In severely infected placenta, very few villi were left. The small arrow points to a PMN; the large arrow points to a trophoblastic cell. Magnification, ×200.