On the biological and biochemical nature of cloned populations of Strongyloides ratti.

Seven geographically varied isolates of Strongyloides ratti were cloned. Each clone was examined for the degree of homogonic development of the free-living generation and by enzyme electrophoresis. Considerable variation was found between the clones in the degree of development that was homogonic. In contrast, the clones were indistinguishable by enzyme electrophoresis.