*'''Fatty Acid Compounds''': these are derived from a polyunsaturated fatty acid pre-cursor, usually arachidonic acid. Hormones with this structure form the group Eicosenoids, and are important in imflammatory processes. | *'''Fatty Acid Compounds''': these are derived from a polyunsaturated fatty acid pre-cursor, usually arachidonic acid. Hormones with this structure form the group Eicosenoids, and are important in imflammatory processes. |