Fig. 5From: In vitro effect of three tropical plants on adult Haemonchus placei, an haematophagous nematode from cattleAnthelmintic activities of FA-FD, obtained by vacuum liquid chromatographic fractionation of Vernonia amygdalina chloroform extract. Each value represents two replicates of two independent experiments after 3-h exposure to varying concentrations (0.5–15 mg/mL) at ambient temperature (26‒30 °C). *na indicates ‘not active’Back to article page