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Amoebae are the simplest type of protozoans, and are characterized by a feeding and dividing trophozoite stage that moves by temporary extensions called pseudopodia or false feet.

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Bacteria have flourished on the earth for over three billion years. They were the first life forms on the planet.

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Computer programs are available that crosscheck a new drug's possible trade name with all other trade names currently available. These programs detect dangerous similarities between names and alert the manufacturer of the drug.

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Multiple experimental evidences have confirmed that at the molecular level, cancer is caused by lesions in cellular DNA.

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Elderly adults are living longer, and causes of death are shifting. At the same time, autopsy rates are at or near their lowest in history.

The circulatory system plays a central role in thermoregulation by the moth, Manduca sexta The circulatory system plays a central role in thermoregulation by the moth, Manduca sexta
Central bearded dragon, Pogona vitticeps Central bearded dragon, Pogona vitticeps
Four lions take down a cape buffalo in the central Serengeti, Tanzania Four lions take down a cape buffalo in the central Serengeti, Tanzania
A cyanotic infant. Note the bluish tinge to the skin around the lips, chin, and nose A cyanotic infant. Note the bluish tinge to the skin around the lips, chin, and nose
A central port fuel-injection system. A central port fuel-injection system.
Finish with bilateral stroking to the entire back. Stand at head of the table with fingers pointing ... Finish with bilateral stroking to the entire back. Stand at head of the table with fingers pointing ...
Video: Status Epilepticus

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