Fig. 4From: Characterization of DNA aptamers generated against the soft-shelled turtle iridovirus with antiviral effectsAptamers exhibited no cytotoxic effects in vitro and in vivo. a DNA aptamers exhibited no cytotoxicity in cultured cells. The results for each group are presented as the mean ± SD of three independent experiments. b No pathological changes were found in liver and spleen tissues of aptamer-injected turtles, compared with normal control turtles. The scale bars indicate 20 μmBack to article page