LEWIS HOUGHTON / SCIENCE PHOTO LIBRARY LEWIS HOUGHTON / SCIENCE PHOTO LIBRARY
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Pap smear test kits. Packaged kits for pap smear tests in a general practice (GP) clinic. At left are containers of ThinPrep smear test preservation solution. A cytobrush (right) is used to take a sample of cells from a patient's cervix (neck of the womb). The sample is then placed in this preservative solution and sent to a laboratory for examination. Abnormal cells may indicate cervical disease or cancer. Previously samples were spread straight on to a slide, but this method returns fewer contaminated or incorrect results. Cervical cancer is usually curable when detected early. Photographed in Edinburgh, Scotland.
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