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Autoimmune diseases occur when the immune system destroys its own healthy tissues. When this occurs, white blood cells cannot distinguish between pathogens and normal cells.

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Each year in the United States, there are approximately six million pregnancies. This means that at any one time, about 4% of women in the United States are pregnant.

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Limit intake of red meat and dairy products made with whole milk. Choose skim milk, low-fat or fat-free dairy products. Limit fried food. Use healthy oils when cooking.

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There are major differences in the metabolism of morphine and the illegal drug heroin. Morphine mostly produces its CNS effects through m-receptors, and at k- and d-receptors. Heroin has a slight affinity for opiate receptors. Most of its actions are due to metabolism to active metabolites (6-acetylmorphine, morphine, and morphine-6-glucuronide).

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The Romans did not use numerals to indicate fractions but instead used words to indicate parts of a whole.

Position of the urinary organs. Position of the urinary organs.
Pupil assessment; A, starting position, with penlight to side of pupil; Pupil assessment; A, starting position, with penlight to side of pupil;
Position of lung lobes in relation to anatomical landmarks Position of lung lobes in relation to anatomical landmarks
The thymus gland (A) appearance and position and (B) anatomical structures. The thymus gland (A) appearance and position and (B) anatomical structures.
Cylinder 1 slit signals the computer the piston position for cylinder 1. The 1-degree slits provide ... Cylinder 1 slit signals the computer the piston position for cylinder 1. The 1-degree slits provide ...
Genes expression due to position Genes expression due to position
Video: Carbon fixing adaptations Animation

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