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When blood is deoxygenated and flowing back to the heart through the veins, it is dark reddish-blue in color. Blood in the arteries that is oxygenated and flowing out to the body is bright red. Whereas arterial blood comes out in spurts, venous blood flows.

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The average office desk has 400 times more bacteria on it than a toilet.

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The oldest recorded age was 122. Madame Jeanne Calment was born in France in 1875 and died in 1997. She was a vegetarian and loved olive oil, port wine, and chocolate.

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Acute bronchitis is an inflammation of the breathing tubes (bronchi), which causes increased mucus production and other changes. It is usually caused by bacteria or viruses, can be serious in people who have pulmonary or cardiac diseases, and can lead to pneumonia.

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Bisphosphonates were first developed in the nineteenth century. They were first investigated for use in disorders of bone metabolism in the 1960s. They are now used clinically for the treatment of osteoporosis, Paget's disease, bone metastasis, multiple myeloma, and other conditions that feature bone fragility.

Plasmids in a bacterial cell. Plasmids in a bacterial cell.
A plasmid with segments from many former bacterial hosts A plasmid with segments from many former bacterial hosts
Open, or compound The fracture projects through the skin and there is a possibility of infection or Open, or compound The fracture projects through the skin and there is a possibility of infection or
Sites for and causes for infection Sites for and causes for infection
Levels of hepatitis A antigens and antibody after infection. Levels of hepatitis A antigens and antibody after infection.
Can chichenpox infection elevate the levels of cells? Can chichenpox infection elevate the levels of cells?
Video: Bone cells and tissues - tissue composition and cells

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