Gel Diffusion Studies with Toxocara and Ascaris Extracts

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  • Department of Pediatrics, Bowman Gray School of Medicine, Winston-Salem, N. C.


Analysis of Toxocara canis and Ascaris lumbricoides extracts was made with a Toxocara antiserum (rabbit). At least nine antigenic components in the Toxocara extract and at least five cross reacting antigens in the Ascaris extract were demonstrated. Precipitins to Toxocara extract were demonstrated in the sera of two children with visceral larva migrans. One of these two sera also contained precipitins to Ascaris.