Did you know?
When blood is exposed to air, it clots. Heparin allows the blood to come in direct contact with air without clotting.
Did you know?
Never take aspirin without food because it is likely to irritate your stomach. Never give aspirin to children under age 12. Overdoses of aspirin have the potential to cause deafness.
Did you know?
The human body's pharmacokinetics are quite varied. Our hair holds onto drugs longer than our urine, blood, or saliva. For example, alcohol can be detected in the hair for up to 90 days after it was consumed. The same is true for marijuana, cocaine, ecstasy, heroin, methamphetamine, and nicotine.
Did you know?
By definition, when a medication is administered intravenously, its bioavailability is 100%.
Did you know?
Only 12 hours after an egg cell is fertilized by a sperm cell, the egg cell starts to divide. As it continues to divide, it moves along the fallopian tube toward the uterus at about 1 inch per day.
Scorpions, Spiders and Sharks: Electron-Microscope Images
Dependence of initial velocity on substrate concentration
Electron Microscope
Electron micrograph of the bacterium Escherichia coli
Opener Transmission electron micrograph of conjugating Escherichia coli
Electron micrograph of Euglena gracilis