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Antiviral effect of Gripp-Heel® against several viruses. Inhibitory effect of Gripp Heel® on Influenza A (a), Parainfluenza 3 (b), RSV (c), HRV-14 (d), HSV-1 (e) and Adenovirus 5 (f) determined using plaque reduction assay and virus-specific ELISA for Ad5, respectively ("therapeutic approach"). Data are shown as percentage of inhibition compared to the untreated control (100% inhibition, n = 4).
