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Relative cell tropism of CHIKV pseudotypes. GFP expression was used for parallel titration of CHIKV and VSV-G pseudotypes in a panel of cell types. Relative CHIKV pseudotype titer as compared to VSV-G pseudotype titer in each cell type is shown. The dotted line indicates 100 % infectivity for VSV-G pseudotypes. Data represent the average of at least two independent experiments.
