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The immune system needs 9.5 hours of sleep in total darkness to recharge completely.
Hippocrates noted that blood separates into four differently colored liquids when removed from the body and examined: a pure red liquid mixed with white liquid material with a yellow-colored froth at the top and a black substance that settles underneath; he named these the four humors (for blood, phlegm, yellow bile, and black bile).
Children with strabismus (crossed eyes) can be treated. They are not able to outgrow this condition on their own, but with help, it can be more easily corrected at a younger age. It is important for infants to have eye examinations as early as possible in their development and then another at age 2 years.
The most common treatment options for addiction include psychotherapy, support groups, and individual counseling.
Ether was used widely for surgeries but became less popular because of its flammability and its tendency to cause vomiting. In England, it was quickly replaced by chloroform, but this agent caused many deaths and lost popularity.
![Undrape top leg and apply warming effleurage to lateral leg, hip, and foot in distal to proximal ...](https://biology-forums.com/gallery/33/medium_380798_23_08_17_7_22_04_333281391.jpeg)
![Apply the substance to the arm with long, smooth strokes, then cover the arm and abdomen with the ...](https://biology-forums.com/gallery/33/medium_380798_23_08_17_8_04_42_334071183.jpeg)