15 2dtransport protein: A protein that binds with a hormone in systemic circulation that facilitates its efficient transport. The endocrine system is a system of ductless glands that secrete hormonesLets you roll multiple dice like 2 D15s, or 3 D15s. Add, remove or set numbers of dice to roll. Roll the dice multiple times. You can choose to see only the last roll of dice. Display sumtotal of