Cystic fibrosis DNA test results

Cystic fibrosis DNA test results

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Credit: MOLECULAR GENETICS, EAST ANGLIAN REGIONAL HEALTH AUTHORITY/SCIENCE PHOTO LIBRARY

Caption: Cystic fibrosis (CF) diagnosis. Series of DNA test results from CF patients and their relatives, featuring patterns for patients, carriers and non carriers. Test DNA was amplified using the polymerase chain reaction (PCR) and separated by gel electrophoresis. DNA appears as pink bands when stained with a fluorescent dye and illuminated by ultraviolet light. Most CF patients have DNA missing from their CF gene (lowermost pink band) and only the middle pink band appears. Carriers show a normal (upper band) plus a deleted gene band just underneath (3 examples at far left). Non carriers have just the upper band (4th from left).

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Keywords: condition, cystic fibrosis, diagnosis, disease, disorder, dna test, healthcare, medical, medicine

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