Abstract:To determine whether expression of CD4 and CD8 molecules on T cells is determined-solely by transacting regulators, we examined heterohybridomas derived from the fusion of a rat CD4+ T cell line and the CD4- CD8- mouse thymoma BW5147. The majority of hybrid offspring expressed rat CD4. However, a fraction of the cell lines obtained expressed not only rat CD4 but also various amounts of mouse CD4 and CD8 molecules from both species. Cloning of two of these heterogeneous lines revealed that expression of all fou… Show more
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