- Absence of Toll-Like Receptor 4 Signaling Results in Delayed Yersinia enterocolitica YopP-Induced Cell Death of Dendritic Cells. Gr??bner, S., Schulz, S., Soldanova, I., Gunst, D.S., Waibel, M., Wesselborg, S., Borgmann, S., Autenrieth, I.B. Infect. Immun. (2007)