Abstract
Summary
Daughter sporocysts of S. mansoni cultured axenically in the presence of sulfhydryl compounds in a controlled gas environment underwent growth and development, in some cases culminating in the production of a new generation of daughter sporocysts. The effect occurred within a narrow range of concentrations of either dithiothreitol or a combination of cysteine and glutathione, together with lowering the oxygen level, but not when sulfhydryl or decreased oxygen were used alone. Sporocyst development was equivalent to that obtained monoxenically in association with cell cultures and greater than occurred in medium conditioned by cell cultures.
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