JAMES KING-HOLMES / SCIENCE PHOTO LIBRARY JAMES KING-HOLMES / SCIENCE PHOTO LIBRARY
Blood sampling. View of a woman undergoing venepuncture, the process of removal of a blood sample from a vein. The blood is being removed from the patient's arm. A red tourniquet (band) on her arm is used to constrict venous blood return, thus enlarging the veins and making them easier to penetrate with a hypodermic needle. The blood is drawn into a vacutainer, a test-tube like container seen here within the barrel of the syringe. This blood sample was taken at the London Fertility Clinic, for research on early foetus testing. By taking a blood sample from a mother in early pregnancy, researchers can test the foetus for genetic defects and determine its sex.
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