Inside your body there is a large and amazing family of chemical workers who, although they usually last less than a minute, make life possible. There are so many different kinds of these chemicals, called prostaglandins, that science is just beginning to learn how important they are to life.

Ref: Shodell, Michael. 1983. "The prostaglandin connection." Science 83. p. 78. Photo: Scanning electron micrograph of blood cells. From left to right: human erythrocyte, activated thrombocyte (platelet), leukocyte.(PD)

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