| abstract |
Disclosed is a substance which has a low molecular weight, can be applied in a simpler manner, and has an immunopotentiating activity against cancer and/or a microorganism-mediated infectious disease. n An EP4 agonist exhibits an immunopotentiating activity through the activation of a cytotoxic T cell, and is therefore useful for the prevention and/or treatment of cancer or a microorganism-mediated infection disease. |