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.
There are basically two ways to handle large format drawings: roll them or fold them. Folding has a number of advantages: a folded drawing is easier to archive and takes less space. a set of folded drawings is conveniently organized in a ring binder or file folder, easy to slip in a briefcase to bring along to meetings.