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People with high total cholesterol have about two times the risk for heart disease as people with ideal levels.

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Blood is approximately twice as thick as water because of the cells and other components found in it.

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Symptoms of kidney problems include a loss of appetite, back pain (which may be sudden and intense), chills, abdominal pain, fluid retention, nausea, the urge to urinate, vomiting, and fever.

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According to the National Institute of Environmental Health Sciences, lung disease is the third leading killer in the United States, responsible for one in seven deaths. It is the leading cause of death among infants under the age of one year.

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Inotropic therapy does not have a role in the treatment of most heart failure patients. These drugs can make patients feel and function better but usually do not lengthen the predicted length of their lives.

Mendel's analyses of single-factor crosses Mendel's analyses of single-factor crosses
Single-gene inheritance tracked at the DNA level Single-gene inheritance tracked at the DNA level
Muscle fibers consist of single, elongated, multinucleated cells that arise from the fusion Muscle fibers consist of single, elongated, multinucleated cells that arise from the fusion
A typical lubrication system, showing the oil pan, oil pump, oil filter, and oil passages. A typical lubrication system, showing the oil pan, oil pump, oil filter, and oil passages.
Single-Cell Model Single-Cell Model
Conformations of single-stranded nucleic acids Conformations of single-stranded nucleic acids
Video: Predator- prey competition and symbiosis

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