MARTYN F. CHILLMAID / SCIENCE PHOTO LIBRARY MARTYN F. CHILLMAID / SCIENCE PHOTO LIBRARY
Home pregnancy test, positive result. Test strip used to test urine for a hormone produced during a pregnancy. The strip is showing two red lines, which indicates that the woman is pregnant. The lines show that human chorionic gonadotrophin (HCG) hormone has been detected. The HCG hormone is produced by the placenta, the organ that attaches an embryo to the wall of the uterus.
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