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Effect of egg wax on virus replication. Cultures of L929, treated or not with 0.8 mg/mL of egg wax, were infected with serial picornavirus dilution (r:2) (initial titer of 1 × 104 TCID 50). Cell cultures were observed after 48 h and the cytopathic effect determined on an inverted microscope. Cells without cytophatic effect are stained in blue. The last virus dilution seen as positive is marked with a red line
