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.
Step 2: Decide which way to fold your binding. Besides direction, you also need to think about how you're going to fold and press your binding. You can simply fold binding in half along the entire length, which is called double fold because it's double the fabric when sewn.