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Multiple sclerosis is a condition wherein the body's nervous system is weakened by an autoimmune reaction that attacks the myelin sheaths of neurons.

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The word drug comes from the Dutch word droog (meaning "dry"). For centuries, most drugs came from dried plants, hence the name.

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Cancer has been around as long as humankind, but only in the second half of the twentieth century did the number of cancer cases explode.

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Complications of influenza include: bacterial pneumonia, ear and sinus infections, dehydration, and worsening of chronic conditions such as asthma, congestive heart failure, or diabetes.

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Though “Krazy Glue” or “Super Glue” has the ability to seal small wounds, it is not recommended for this purpose since it contains many substances that should not enter the body through the skin, and may be harmful.

Diagrams showing the multiple energy shells and orbitals of a nitrogen atom Diagrams showing the multiple energy shells and orbitals of a nitrogen atom
Benzene delocalized electrons Benzene delocalized electrons
Lewis symbols,(Figure 1) Lewis symbols,(Figure 1)
How much voltage does the resistor drop in Figure 10-2? a. 59 mV b. 19.94 V c. 20 V d. 10 V How much voltage does the resistor drop in Figure 10-2? a. 59 mV b. 19.94 V c. 20 V d. 10 V
Pineapples carry harmful insect shell insects, safe to eat? Pineapples carry harmful insect shell insects, safe to eat?
Figure 2.15.jpg Figure 2.15.jpg
Video: Pores and Ion Channels

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