Abstract

AbstractDifferent concentrations of L‐fucose uniformly produced a suppression in the growth rate and a change in the morphology of cells grown in tissue culture. The inhibition of growth of these malignant cells was found to he concentration dependent with 100% inhibition of growth at a concentration of 50 mg fucose per milliliter of medium and 60% inhibition at a concentration of 12.5 mg fucose per milliliter medium. Using other sugars that are components of the glycoproteins, it was shown that mannose and galactose could also depress the rate of growth of these tumor cells in culture. When 0.05 ml of packed tumor cells used in these experiments was resuspended in 1 ml of medium and injected into a rat, a tumor grew at the site of injection. This new tumor exhibited similar growth characteristics and showed the same histological appearance as the tumor from which the cell line was derived.

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