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It is believed that humans initially contracted crabs from gorillas about 3 million years ago from either sleeping in gorilla nests or eating the apes.

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About 3.2 billion people, nearly half the world population, are at risk for malaria. In 2015, there are about 214 million malaria cases and an estimated 438,000 malaria deaths.

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Since 1988, the CDC has reported a 99% reduction in bacterial meningitis caused by Haemophilus influenzae, due to the introduction of the vaccine against it.

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Congestive heart failure is a serious disorder that carries a reduced life expectancy. Heart failure is usually a chronic illness, and it may worsen with infection or other physical stressors.

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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.

Relationships among the coding sequence of a gene, the codon sequence of an mRNA, the anticodons of Relationships among the coding sequence of a gene, the codon sequence of an mRNA, the anticodons of
DNA Polymerase Binds to the Template Strand.p2 DNA Polymerase Binds to the Template Strand.p2
Post–Main-Sequence Evolution of Low-Mass Stars Post–Main-Sequence Evolution of Low-Mass Stars
Complementary and Alternative Therapy Use Among Adults and Children Complementary and Alternative Therapy Use Among Adults and Children
Common restriction enzymes, with their recognition sequence, DNA cutting patterns, and sources Common restriction enzymes, with their recognition sequence, DNA cutting patterns, and sources
An insertion sequence (IS), shown in purple An insertion sequence (IS), shown in purple
Video: Hormonal regulation of blood pressure - RAA system

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