2,3-DPG. An organic phosphate in red blood cells that alters the affinity of hemoglobin for oxygen. Blood cells stored in a blood bank lose 2,3-diphosphoglycerate, but once they are infused, the substance is resynthesized or reactivated.
Definition of soft fold. : the fold that results when paper is lapped.
A thin fold of soft tissue extending from the gingiva of the mid-anterior alveolar ridge to the inner surface of the medial part of the upper or lower lip (see Fig. 2). Lingual Frenulum: A thin fold of soft tissue extending from the floor of the mouth to the base of the tongue.