noun, Biochemistry. 1. a pigment containing melanin, found in bird feathers. Origin of eumelanin. eu- + melanin.
1 In the United States, rapid-acting insulin, Lyspro (humalog) is mixed with NPH in a 50:50 (50% NPH and 50% insulin Lyspro) and 75:25 (75% NPH and 25% insulin Lyspro) ratio.  Insulin/Aspart (Novolog) combinations also are available as 70:30 mixtures (70% NPH, 30% insulin aspart).
1 Not all insulin types are available for use in insulin pen cartridges. 2  Insulin pens do not let you mix insulin types, which means that if the insulin mixture you need is not available as a pre-mix, two injections must be given-one for each type of insulin. 3  Insulin pens should only be used for self-injection. The size of the numbers on the pen dose dial and whether they are magnified. 2  The amount of strength and dexterity required to operate the pen. 3  How to correct a mistake if you dial the wrong dose into the pen. 4  The way the pen indicates whether or not there is enough insulin left in it for your entire dose.