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Did you know?

Always store hazardous household chemicals in their original containers out of reach of children. These include bleach, paint, strippers and products containing turpentine, garden chemicals, oven cleaners, fondue fuels, nail polish, and nail polish remover.

Did you know?

Aspirin may benefit 11 different cancers, including those of the colon, pancreas, lungs, prostate, breasts, and leukemia.

Did you know?

Green tea is able to stop the scent of garlic or onion from causing bad breath.

Did you know?

Many people have small pouches in their colons that bulge outward through weak spots. Each pouch is called a diverticulum. About 10% of Americans older than age 40 years have diverticulosis, which, when the pouches become infected or inflamed, is called diverticulitis. The main cause of diverticular disease is a low-fiber diet.

Did you know?

The immune system needs 9.5 hours of sleep in total darkness to recharge completely.

Gram-positive and Gram-negative bacteria. Gram-positive and Gram-negative bacteria.
Papilio machaon caterpillar showing the osmeterium, which emits unpleasant smells to ward off predat Papilio machaon caterpillar showing the osmeterium, which emits unpleasant smells to ward off predat
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, ...
Negative feedback control of a regulated variable. Negative feedback control of a regulated variable.
The bacterial cell wall: (a) gram-positive bacterium; (b) gram-negative bacterium. The bacterial cell wall: (a) gram-positive bacterium; (b) gram-negative bacterium.
Negative reciprocal Negative reciprocal
Video: Introduction to Cystic Fibrosis

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