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Did you know?

There are more nerve cells in one human brain than there are stars in the Milky Way.

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Asthma is the most common chronic childhood disease in the world. Most children who develop asthma have symptoms before they are 5 years old.

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Thyroid conditions may make getting pregnant impossible.

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The average older adult in the United States takes five prescription drugs per day. Half of these drugs contain a sedative. Alcohol should therefore be avoided by most senior citizens because of the dangerous interactions between alcohol and sedatives.

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Hyperthyroidism leads to an increased rate of metabolism and affects about 1% of women but only 0.1% of men. For most people, this increased metabolic rate causes the thyroid gland to become enlarged (known as a goiter).

Structural hierarchy in the molecular organization of cells Structural hierarchy in the molecular organization of cells
Stem Cell Hierarchy Stem Cell Hierarchy
Four levels of protein hierarchy Four levels of protein hierarchy
Maslow’s Hierarchy Maslow’s Hierarchy
Maslow and Self-Actualization Maslow and Self-Actualization
The hierarchy of genes involved in establishing the segmented body plan in Drosophila The hierarchy of genes involved in establishing the segmented body plan in Drosophila
Video: Oxygen transport - methods and oxyhemoglobin

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