The immune system needs 9.5 hours of sleep in total darkness to recharge completely.
Did you know?
The U.S. Preventive Services Task Force recommends that all women age 65 years of age or older should be screened with bone densitometry.
Did you know?
According to research, pregnant women tend to eat more if carrying a baby boy. Male fetuses may secrete a chemical that stimulates their mothers to step up her energy intake.
Did you know?
More than 150,000 Americans killed by cardiovascular disease are younger than the age of 65 years.
Did you know?
In ancient Rome, many of the richer people in the population had lead-induced gout. The reason for this is unclear. Lead poisoning has also been linked to madness.
Electron micrographs of a cellular membrane.
Insects Under the Electron Microscope
Scorpions, Spiders and Sharks: Electron-Microscope Images
Giardiasis. Colorized electron micrograph of a Giardia protozoan adhering to the surface of an epith
A transmission electron micrograph of cytokinesis in a cross section of a dividing cell
Which of the following is the electron dot formula for an atom of strontium?