Webster Dictionary(0.00 / 0 votes)Rate this definition: Melanin(noun) a black pigment found in the pigment-bearing cells of the skin (particularly in the skin of the negro), in the epithelial cells of the external layer of the retina (then called fuscin), in the outer layer of the choroid, and elsewhere. It is supposed to be derived from the decomposition of hemoglobin.
How to prepare your insulin dose if you are using two types of insulin: 1  When you mix regular insulin with another type of insulin, always draw the regular insulin into the syringe first. When you mix two types of insulins other than regular insulin, it does not matter in what order you draw them into the syringe.
Inject the insulin using the â5-Pâ method below. 1  Gently clean your skin with an alcohol swab at the site selected for injection. 2  Pinch your skin gently at the site selected for injection. 3  Pierce the site with the pen.  Push the plunger button on the pen all the way down until the plunger meets the pen.