Fig. 6
From: Establishment of a gnotobiotic pig model of Clostridioides difficile infection and disease

Cytotoxicity assay. C. difficile inoculated samples induced cell rounding while PBS control samples had no cytotoxic affect. The neutralizing antibody FZ003 was added to control wells to validate cell rounding was due to C. difficile toxins (A). The titer is defined as the highest dilution of a sample to cause cell rounding (B)