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There are over 65,000 known species of protozoa. About 10,000 species are parasitic.

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Normal urine is sterile. It contains fluids, salts, and waste products. It is free of bacteria, viruses, and fungi.

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Drugs are in development that may cure asthma and hay fever once and for all. They target leukotrienes, which are known to cause tightening of the air passages in the lungs and increase mucus productions in nasal passages.

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The average human gut is home to perhaps 500 to 1,000 different species of bacteria.

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Vampire bats have a natural anticoagulant in their saliva that permits continuous bleeding after they painlessly open a wound with their incisors. This capillary blood does not cause any significant blood loss to their victims.

Map distances are generally additive Map distances are generally additive
Cross-sectional data showing that the amount of effort spent on personal health care increases with Cross-sectional data showing that the amount of effort spent on personal health care increases with
If you want to show differences between items at the same time, a bar graph is more effective than a If you want to show differences between items at the same time, a bar graph is more effective than a
Correlations on tests for a number of cognitive abilities are higher for monozygotic twin pairs (who ... Correlations on tests for a number of cognitive abilities are higher for monozygotic twin pairs (who ...
Atomic Number and Mass Number Atomic Number and Mass Number
DNA Hypermethylation of Number of Known Genes DNA Hypermethylation of Number of Known Genes
Video: Monohybrid crosses

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