Abstract
Summary
Normal and arsenic-resistant strains of T. equiperdum do not differ significantly with respect to their sulfhydryl content, but the former shows a considerable surplus of disulfide groups. The sulfhydryl content of normal T. hippicum is not appreciably different from that of an arsenic-resistant strain, but the disulfide content of the arsenic-resistant strain is higher than that of the normal strain. It is concluded that these differences are not the cause of the resistance but may be rather the result of some cytological reconstitution which probably also gives rise to resistance. The sulfhydryl content is found to be of the same order as the degree of arsenic binding.
Get full access to this article
View all access options for this article.