Within the lungs of humans, gas exchange occurs across

Street names for barbiturates include reds, red devils, yellow jackets, blue heavens, Christmas trees, and rainbows. They are commonly referred to as downers.

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The people with the highest levels of LDL are Mexican American males and non-Hispanic black females.

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Pink eye is a term that refers to conjunctivitis, which is inflammation of the thin, clear membrane (conjunctiva) over the white part of the eye (sclera). It may be triggered by a virus, bacteria, or foreign body in the eye. Antibiotic eye drops alleviate bacterial conjunctivitis, and antihistamine allergy pills or eye drops help control allergic conjunctivitis symptoms.

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To prove that stomach ulcers were caused by bacteria and not by stress, a researcher consumed an entire laboratory beaker full of bacterial culture. After this, he did indeed develop stomach ulcers, and won the Nobel Prize for his discovery.

A molecular model showing chromosome territories in the cell nucleus of humans

Human Lungs Diagram

Anatomically modern humans from the Israeli cave sites of Skhul and Qafzeh may be the earliest found

The S-curve in the human vertebral column--a result of the evolution of bipedality--makes humans hig

Humans are related to Earth’s other organisms

How a frog fills its lungs.

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