Biological studies on chemical components of Ascaris lumbricoides. I

A kind of albuminous substance and polysaccharide were extracted by treating with trichloroacetic acid and absolute alcohol, and heat and dialysis, respectively, from the body fluid and the water soluble part of the dried body tissue of human Ascaris. The former substance was positive for albuminous colour reaction, rabbit skin test, as well as for precipitin test tried on the rabbit immune serum, while the latter substance was negative for all of the three tests. From the results of the above tests it may be concluded that this substance has a toxic effect upon rabbits.