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Did you know?

Normal urine is sterile. It contains fluids, salts, and waste products. It is free of bacteria, viruses, and fungi.

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When blood is exposed to air, it clots. Heparin allows the blood to come in direct contact with air without clotting.

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Never take aspirin without food because it is likely to irritate your stomach. Never give aspirin to children under age 12. Overdoses of aspirin have the potential to cause deafness.

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Dogs have been used in studies to detect various cancers in human subjects. They have been trained to sniff breath samples from humans that were collected by having them breathe into special tubes. These people included 55 lung cancer patients, 31 breast cancer patients, and 83 cancer-free patients. The dogs detected 54 of the 55 lung cancer patients as having cancer, detected 28 of the 31 breast cancer patients, and gave only three false-positive results (detecting cancer in people who didn't have it).

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The term bacteria was devised in the 19th century by German biologist Ferdinand Cohn. He based it on the Greek word "bakterion" meaning a small rod or staff. Cohn is considered to be the father of modern bacteriology.

An example of horizontal gene transfer: antibiotic resistance An example of horizontal gene transfer: antibiotic resistance
Horizontal, sagittal, and coronal functional MRIs show areas of increased activity in the primary ... Horizontal, sagittal, and coronal functional MRIs show areas of increased activity in the primary ...
Deep transverse friction (i.e., Cyriax friction) on an ankle ligament. Deep transverse friction (i.e., Cyriax friction) on an ankle ligament.
Horizontal stroking of the abdomen. Place a hand on either side of the waist, fingers pointing away ... Horizontal stroking of the abdomen. Place a hand on either side of the waist, fingers pointing away ...
Massage extensor muscles and apply transverse friction over tendons. Knead and press into forearm ... Massage extensor muscles and apply transverse friction over tendons. Knead and press into forearm ...
Perform horizontal stroking of the thigh by facing the table and placing hands on the thigh with ... Perform horizontal stroking of the thigh by facing the table and placing hands on the thigh with ...
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