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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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The toxic levels for lithium carbonate are close to the therapeutic levels. Signs of toxicity include fine hand tremor, polyuria, mild thirst, nausea, general discomfort, diarrhea, vomiting, drowsiness, muscular weakness, lack of coordination, ataxia, giddiness, tinnitus, and blurred vision.

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The most common childhood diseases include croup, chickenpox, ear infections, flu, pneumonia, ringworm, respiratory syncytial virus, scabies, head lice, and asthma.

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Signs and symptoms of a drug overdose include losing consciousness, fever or sweating, breathing problems, abnormal pulse, and changes in skin color.

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The first oral chemotherapy drug for colon cancer was approved by FDA in 2001.

Human Evolution Human Evolution
Resource partitioning among five species of warblers feeding in North American spruce trees. Resource partitioning among five species of warblers feeding in North American spruce trees.
Cloning may help save endangered species. Cloning may help save endangered species.
Vesalius’s De Humani Corporis Fabrica was an important early work on the human species. Vesalius’s De Humani Corporis Fabrica was an important early work on the human species.
Mitotic human chromosomes in metaphase Mitotic human chromosomes in metaphase
Genomic and fossil evidence has been used to estimate the times of divergence of human and Neanderth Genomic and fossil evidence has been used to estimate the times of divergence of human and Neanderth
Video: Genetic terms Animation

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