Reduced proliferation in ILK-ko mice in response to C. rodentium. infection. A, B. Sections were processed for immunohistochemistry using an antibody to Ki-67 at the time-points indicated. The photomicrographs are representative of data from 5 mice. C. The number of Ki-67 positive cells per crypt were counted in 5 HPFs at days 6 and 15. D. Crypt heights were measured using a micrometer in 5 different fields, in each of 5 mice per group.