“The preferential inhibition by (-)-epigallocatechin gallate (EGCg) of growth of … (e.g. HeLa) in culture correlates with the ability of EGCg to inhibit a …-related, cell surface hydroquinone oxidase with protein disulfide-thiol interchange activity (tNOX) measured as an … oxidase and specifically associated with tumorigenically-transformed cells and tissues.”