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Dependence of X. johnsonii extract concentration on percentage of affected A. franciscana, following exposure for (a) 24 h, (b) 48 h, (c) 72 h. X. johnsonii extract was diluted freshly prior to use in deionized water; 400 µl of juice dilution was added to 400 µl of saline containing A. franciscana nauplii. Affected nauplii were defined as the lack of controlled forward movement. All bioassays were performed in at least triplicate
