... propagated in Madin-Darby canine kidney (MDCK) cells. Virus infec-tivity was determined by cytopathic assays on MDCKcells and quantified as 50% tissue culture infectious dose(TCID50). Infectious ... RW,Long HT, Poon LL, Guan Y, et al: Proinflammatory cytokine responsesinduced by influenza A (H5N1) viruses in primary human alveolar and bronchial epithelial cells. Respiratory Research 2005, 6:135.25. ... pathology of influenza virus infections.Annual Review of Pathology 2008, 3:499-522.26. Woo PC, Tung ET, Chan KH, Lau CC, Lau SK, Yuen KY: Cytokine profilesinduced by the novel swine-origin influenza...