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Did you know?

Cancer has been around as long as humankind, but only in the second half of the twentieth century did the number of cancer cases explode.

Did you know?

Vampire bats have a natural anticoagulant in their saliva that permits continuous bleeding after they painlessly open a wound with their incisors. This capillary blood does not cause any significant blood loss to their victims.

Did you know?

Blood in the urine can be a sign of a kidney stone, glomerulonephritis, or other kidney problems.

Did you know?

According to the American College of Allergy, Asthma & Immunology, more than 50 million Americans have some kind of food allergy. Food allergies affect between 4 and 6% of children, and 4% of adults, according to the CDC. The most common food allergies include shellfish, peanuts, walnuts, fish, eggs, milk, and soy.

Did you know?

Not getting enough sleep can greatly weaken the immune system. Lack of sleep makes you more likely to catch a cold, or more difficult to fight off an infection.

Cells involved in specific immunity in vertebrates. Cells involved in specific immunity in vertebrates.
Innate and adaptive immunity Innate and adaptive immunity
Our innate preferences for sugar and fat are sometimes hard to resist. Our innate preferences for sugar and fat are sometimes hard to resist.
Another early evolutionary example of immunity When a red sponge and a blue sponge are blended ... Another early evolutionary example of immunity When a red sponge and a blue sponge are blended ...
Innate Defenses Innate Defenses
Adaptive Immunity Adaptive Immunity
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