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Title: Testosterone Molecular Model
Caption: A molecular model of testosterone, a steroid hormone responsible for the development of male secondary sex characteristics, and is the principle male sex hormone produced in the testes. Atoms are colored dark gray (carbon), light gray (hydrogen) and red (oxygen).
Credit: Album / Science Source / Evan Oto
Image size: 5100 × 4500 px | 65.7 MB
Print size: 43.2 × 38.1 cm | 2007.9 × 1771.7 in (300 dpi)