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Examples of adult S. mansoni males after exposure to 1.25 μg/mL of E. ivorense methanol bark extract fractions. (a) Control worms (each worm is approximately 500 to 700 μm long); (b) damaged worms in the presence of the 50% v/v methanol fraction after 24 h. Note the marked darkening and the damage (blebbing) to the tegumental surface.
