calaxin

Noun

 * 1)  A tricyclic lactone [(2Z,4R,8R,9R,11R)-2,11-dimethyl-7-methylidene-6,12-dioxo-5,14-dioxatricyclo[9.2.1.04,8]tetradeca-1(13),2-dien-9-yl] 2-methylprop-2-enoate
 * 2)  A particular calcium-sensor protein that has a function in sperm motility