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Cyanide works by making the human body unable to use oxygen.

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An identified risk factor for osteoporosis is the intake of excessive amounts of vitamin A. Dietary intake of approximately double the recommended daily amount of vitamin A, by women, has been shown to reduce bone mineral density and increase the chances for hip fractures compared with women who consumed the recommended daily amount (or less) of vitamin A.

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Chronic marijuana use can damage the white blood cells and reduce the immune system's ability to respond to disease by as much as 40%. Without a strong immune system, the body is vulnerable to all kinds of degenerative and infectious diseases.

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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.

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The most common treatment options for addiction include psychotherapy, support groups, and individual counseling.

Slit lamp examination. Slit lamp examination.
Typical Examination Room Equipment and Supplies Cont. Typical Examination Room Equipment and Supplies Cont.
Body Part, Method of Examination, and Equipment Used During the General Physical Examination Cont. Body Part, Method of Examination, and Equipment Used During the General Physical Examination Cont.
Preparing a Urine Specimen for Microscopic Examination (for Classroom Evaluation Only) Preparing a Urine Specimen for Microscopic Examination (for Classroom Evaluation Only)
Mental Status Examination Mental Status Examination
Video: Polymerase chain reaction PCR - Animation

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