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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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Lower drug doses for elderly patients should be used first, with titrations of the dose as tolerated to prevent unwanted drug-related pharmacodynamic effects.

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Eating food that has been cooked with poppy seeds may cause you to fail a drug screening test, because the seeds contain enough opiate alkaloids to register as a positive.

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Only one in 10 cancer deaths is caused by the primary tumor. The vast majority of cancer mortality is caused by cells breaking away from the main tumor and metastasizing to other parts of the body, such as the brain, bones, or liver.

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

Aerial view of a blue whale showing both pectoral fins Aerial view of a blue whale showing both pectoral fins
Percussing Liver Span, Determining Lower Liver Border Percussing Liver Span, Determining Lower Liver Border
Client files are kept in alphabetical order in locked file cabinets. Client files are kept in alphabetical order in locked file cabinets.
First-order sensory neuron with encapsulated nerve endings First-order sensory neuron with encapsulated nerve endings
Higher-Order Conditioning Higher-Order Conditioning
Brush border cell Brush border cell
Video: Genetic distance between human groups

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