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The term bacteria was devised in the 19th century by German biologist Ferdinand Cohn. He based it on the Greek word "bakterion" meaning a small rod or staff. Cohn is considered to be the father of modern bacteriology.

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In the United States, an estimated 50 million unnecessary antibiotics are prescribed for viral respiratory infections.

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Amphetamine poisoning can cause intravascular coagulation, circulatory collapse, rhabdomyolysis, ischemic colitis, acute psychosis, hyperthermia, respiratory distress syndrome, and pericarditis.

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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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The Romans did not use numerals to indicate fractions but instead used words to indicate parts of a whole.

Homunculus maps of human body parts along the cerebral cortex. Homunculus maps of human body parts along the cerebral cortex.
Invasive species in Canada include (a) zebra mussels, Dreissena polymorpha, (b) sea lamprey, Petromy Invasive species in Canada include (a) zebra mussels, Dreissena polymorpha, (b) sea lamprey, Petromy
Dicksonia antarctica, a species of tree fern Dicksonia antarctica, a species of tree fern
Human civilization developed during the most recent interglacial stage Human civilization developed during the most recent interglacial stage
Fluorescent in situ hybridization (FISH) of human metaphase chromosomes Fluorescent in situ hybridization (FISH) of human metaphase chromosomes
Functional Regions of the Human Brain Functional Regions of the Human Brain
Video: Mechanisms for chromosome movement Animation

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