LAGUNA DESIGN / SCIENCE PHOTO LIBRARY LAGUNA DESIGN / SCIENCE PHOTO LIBRARY
Androstenedione. Molecular model of the steroid hormone androstenedione (C19.H26.O2). It is produced in the adrenal glands and is the precursor to the male and female sex hormones. It is used illegally by athletes seeking to enhance their sporting performances. Atoms are represented as spheres and are colour-coded: carbon (grey), hydrogen (white) and oxygen (red).
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