1 : any of various composite plants (genus Chrysanthemum) including weeds, ornamentals grown for their brightly colored often double flower heads, and others important as sources of medicinals and insecticides. 2 : a flower head of an ornamental chrysanthemum.
Elastin is a highly elastic protein in connective tissue and allows many tissues in the body to resume their shape after stretching or contracting. Elastin helps skin to return to its original position when it is poked or pinched.
Tropoelastin is the water soluble precursor to elastin. Tropoelastin is the form of elastin made by the cells in the body. This elastin precursor is then exported outside the cells and becomes incorporated into the extracellular matrix as elastin.