<;P>;PROBLEM TO BE SOLVED: To provide an adsorbent material effective for removing cells such as granulocyte and monocyte and leaving a liquid component free from cytokines promoting the activation of remaining cells. <;P>;SOLUTION: The adsorbent material has a zeta potential of -20mV or over and adsorbs granulocytes and/or monocytes in blood and cytokines at the same time. <;P>;COPYRIGHT: (C)2007,JPO&INPIT