ITGAX and measles: Due to the importance of our observations for the understanding of measles pathogenesis, transmission, and viral receptor usage, sections from nine established and late cases were dually labeled with antibodies specific for MV and epithelial cells (CAM 5.2 and AE1/AE3, representing a mixture of two different clones of anti-cytokeratin monoclonal antibodies with a broad spectrum of reactivity) or a panel of immune cell proteins, including CD150, CD11c, CD68, Iba1, CD3, and CD20.