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99.0 MB (16.2 MB compressed)
5882 x 5882 pixels
49.8 x 49.8 cm ⏐ 19.6 x 19.6 in (300dpi)
LENNART NILSSON, TT / SCIENCE PHOTO LIBRARY LENNART NILSSON, TT / SCIENCE PHOTO LIBRARY
Polarised light micrograph of crystals of the male sex hormone testosterone. Testosterone is a steroid hormone responsible for the development of male secondary sex characteristics, and is the principle male sex hormone produced in the testes.
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