“…According to the studies on microbiological activity (7,8), incorporation into erythrocytes (9), intestinal absorption (10) and distribution in viscera (11), TPD and TTFD were reported to have an efficient membrane permeability , and it was also known that the majority of them enters the cell wall without being reduced . This high permeability corresponds to a high fat solubility of disulfide derivatives , such as TPD (12).…”