There are more nerve cells in one human brain than there are stars in the Milky Way.
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After a vasectomy, it takes about 12 ejaculations to clear out sperm that were already beyond the blocked area.
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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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The average office desk has 400 times more bacteria on it than a toilet.
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By definition, when a medication is administered intravenously, its bioavailability is 100%.
The locations of genetic material in animal and plant cells.
Segregation of B cells and T cells in a lymph node
Motile sperm cells of algae and seedless plants.
In oogenesis, cells enter meiosis as primary oocytes