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19.9 MB (2.9 MB compressed)
2848 x 2442 pixels
24.1 x 20.6 cm ⏐ 9.5 x 8.1 in (300dpi)
SCIENCE PHOTO LIBRARY SCIENCE PHOTO LIBRARY
Intrauterine device. Coloured X-ray of an intrauterine device (IUD, red) in place in the uterus or womb of a 29 year old woman. This is a form of contraception that is thought to work by preventing the implantation of a fertilised egg in the uterine lining. It comprises a T-shaped piece of metal or plastic. The IUD is not quite as effective as the contraceptive pill, but does not have the mental and physical side-effects associated with taking hormone drugs. The sacrum bone is seen above the IUD at centre, with the two blades of the pelvis at upper left and right.
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