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The strongest synthetic topical retinoid drug available, tazarotene, is used to treat sun-damaged skin, acne, and psoriasis.

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Adolescents often feel clumsy during puberty because during this time of development, their hands and feet grow faster than their arms and legs do. The body is therefore out of proportion. One out of five adolescents actually experiences growing pains during this period.

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Not getting enough sleep can greatly weaken the immune system. Lack of sleep makes you more likely to catch a cold, or more difficult to fight off an infection.

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In ancient Rome, many of the richer people in the population had lead-induced gout. The reason for this is unclear. Lead poisoning has also been linked to madness.

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Of the estimated 2 million heroin users in the United States, 600,000–800,000 are considered hardcore addicts. Heroin addiction is considered to be one of the hardest addictions to recover from.

The Sun by the Atmospheric Imaging Assembly of NASA's Solar Dynamics Observatory The Sun by the Atmospheric Imaging Assembly of NASA's Solar Dynamics Observatory
The rotating assembly for a V-8 engine that has eight pistons and connecting rods and one ... The rotating assembly for a V-8 engine that has eight pistons and connecting rods and one ...
A rod/piston assembly from a 5.9 liter Cummins diesel engine used in a Dodge pickup truck. A rod/piston assembly from a 5.9 liter Cummins diesel engine used in a Dodge pickup truck.
A schematic of a Stanadyne diesel fuel injection pump assembly showing all of the related ... A schematic of a Stanadyne diesel fuel injection pump assembly showing all of the related ...
A typical fuel-pump module assembly, which includes the pickup strainer and fuel pump, as well as ... A typical fuel-pump module assembly, which includes the pickup strainer and fuel pump, as well as ...
Multiprotein complexes in the mitochondrial respiratory assembly Multiprotein complexes in the mitochondrial respiratory assembly
Video: Structure of a Ribosome

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