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Reactivity of Asia1/YS/CHA/05 and Asia1/1/YZ/CHA/06 with MAb 1B4 in an indirect immunofluorescence assay. (A) Asia1/1/YZ/CHA/06-infected BHK-21 cells, (B) Asia1/YS/CHA/05-infected BHK-21 cells and (C) normal BHK-21 cells as a negative control.
