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Did you know?

The eye muscles are the most active muscles in the whole body. The external muscles that move the eyes are the strongest muscles in the human body for the job they have to do. They are 100 times more powerful than they need to be.

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Asthma cases in Americans are about 75% higher today than they were in 1980.

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According to research, pregnant women tend to eat more if carrying a baby boy. Male fetuses may secrete a chemical that stimulates their mothers to step up her energy intake.

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Human kidneys will clean about 1 million gallons of blood in an average lifetime.

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Eating carrots will improve your eyesight. Carrots are high in vitamin A (retinol), which is essential for good vision. It can also be found in milk, cheese, egg yolks, and liver.

Fates of hematopoietic stem cells Fates of hematopoietic stem cells
Types of infections and their Effects on host cells Types of infections and their Effects on host cells
The blood cells are shown in (a)–(f) and the tissue white blood cells are shown in (g), (h), and ... The blood cells are shown in (a)–(f) and the tissue white blood cells are shown in (g), (h), and ...
Recognition of conformational epitopes by B cells. Recognition of conformational epitopes by B cells.
Regulation of translation in erythropoietic cells by heme levels Regulation of translation in erythropoietic cells by heme levels
Red blood cells with normal hemoglobin, like the three similar ones, are smooth and round Red blood cells with normal hemoglobin, like the three similar ones, are smooth and round
Video: Pasteur's Experiment

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