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Certain chemicals, after ingestion, can be converted by the body into cyanide. Most of these chemicals have been removed from the market, but some old nail polish remover, solvents, and plastics manufacturing solutions can contain these substances.

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It is important to read food labels and choose foods with low cholesterol and saturated trans fat. You should limit saturated fat to no higher than 6% of daily calories.

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When blood is deoxygenated and flowing back to the heart through the veins, it is dark reddish-blue in color. Blood in the arteries that is oxygenated and flowing out to the body is bright red. Whereas arterial blood comes out in spurts, venous blood flows.

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More than 2,500 barbiturates have been synthesized. At the height of their popularity, about 50 were marketed for human use.

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There are more nerve cells in one human brain than there are stars in the Milky Way.

An electron micrograph from an experiment demonstrating the function of a tight junction An electron micrograph from an experiment demonstrating the function of a tight junction
Leder's experiment showing the binding of mRNA to DNA that contains an intron Leder's experiment showing the binding of mRNA to DNA that contains an intron
Why are some of the letters above the red line and some letters below? Why are some of the letters above the red line and some letters below?
An Example of an Electrical Stimulation Experiment An Example of an Electrical Stimulation Experiment
A Mental Model of the Craftsman Experiment A Mental Model of the Craftsman Experiment
Rosenthal and Fode’s Rat Experiment Rosenthal and Fode’s Rat Experiment
Video: Protein catabolism (Krebs cycle) and Protein anabolism (protein synthesis)

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