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Did you know?

Intradermal injections are somewhat difficult to correctly administer because the skin layers are so thin that it is easy to accidentally punch through to the deeper subcutaneous layer.

Did you know?

Hypertension is a silent killer because it is deadly and has no significant early symptoms. The danger from hypertension is the extra load on the heart, which can lead to hypertensive heart disease and kidney damage. This occurs without any major symptoms until the high blood pressure becomes extreme. Regular blood pressure checks are an important method of catching hypertension before it can kill you.

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There are 60,000 miles of blood vessels in every adult human.

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Only one in 10 cancer deaths is caused by the primary tumor. The vast majority of cancer mortality is caused by cells breaking away from the main tumor and metastasizing to other parts of the body, such as the brain, bones, or liver.

Did you know?

People with high total cholesterol have about two times the risk for heart disease as people with ideal levels.

coagulase negative Staphylococcus on Blood agar coagulase negative Staphylococcus on Blood agar
Timothy O'Sullivan (negative) and Alexander Gardner (print), A Harvest of Death, Gettysburg, ... Timothy O'Sullivan (negative) and Alexander Gardner (print), A Harvest of Death, Gettysburg, ...
Gram negative N. gonorrhoeae. Gram negative N. gonorrhoeae.
Negative feedback loops affecting hypothalamic and anterior pituitary tropic hormones. Negative feedback loops affecting hypothalamic and anterior pituitary tropic hormones.
Gram-stained cervical smear. Note the gram-negative diplococci Neisseria gonorrhoeae ... Gram-stained cervical smear. Note the gram-negative diplococci Neisseria gonorrhoeae ...
Positive and Negative Punishment Positive and Negative Punishment
Video: Predator- prey competition and symbiosis

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