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The most dangerous mercury compound, dimethyl mercury, is so toxic that even a few microliters spilled on the skin can cause death. Mercury has been shown to accumulate in higher amounts in the following types of fish than other types: swordfish, shark, mackerel, tilefish, crab, and tuna.

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Earwax has antimicrobial properties that reduce the viability of bacteria and fungus in the human ear.

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Complications of influenza include: bacterial pneumonia, ear and sinus infections, dehydration, and worsening of chronic conditions such as asthma, congestive heart failure, or diabetes.

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Bacteria have been found alive in a lake buried one half mile under ice in Antarctica.

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The most common childhood diseases include croup, chickenpox, ear infections, flu, pneumonia, ringworm, respiratory syncytial virus, scabies, head lice, and asthma.

El Niño and areas of high marine primary production around the Galapagos Islands. Noti El Niño and areas of high marine primary production around the Galapagos Islands. Noti
Respiratory system Respiratory system
Divisions of the nervous system. Divisions of the nervous system.
Components of the lymphatic system. Components of the lymphatic system.
(a) Blue arrows (right side): External components of the innate immune system: human body with skin, ... (a) Blue arrows (right side): External components of the innate immune system: human body with skin, ...
Physics - Density and Pressure Physics - Density and Pressure
Video: Ultrasound of a Fetus (Sonogram)

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