Normal urine is sterile. It contains fluids, salts, and waste products. It is free of bacteria, viruses, and fungi.
Did you know?
Cyanide works by making the human body unable to use oxygen.
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In ancient Rome, many of the richer people in the population had lead-induced gout. The reason for this is unclear. Lead poisoning has also been linked to madness.
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There are over 65,000 known species of protozoa. About 10,000 species are parasitic.
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Multiple experimental evidences have confirmed that at the molecular level, cancer is caused by lesions in cellular DNA.
The hair cycle
black sand
Assessing Palpebral Conjunctiva, Patient Position
Respiratory Assistive Devices, Patient Using a Peak Flow Meter
Wassily Kandinsky, Black Lines (Schwarze Linien).
Pneumonia patient’s chest x-ray. Note the irregular areas of density.