Find out how different vaccines for the coronavirus cause your body to create antibodies that fight the virus.

We explain the different types of logo and when to use each one.

Kidney stones are solid deposits of minerals that can form in the kidneys, also known as renal calculi. They can be made up of various types of crystals, with the most abundant crystal determining the ...

They all offer slightly different benefits.

No one in human history has ever seen an eclipse quite like the one seen by the crew of Apollo 12 on Nov. 21, 1969. Countless billions of us have seen the moon eclipse the sun, casting its shadow on ...

A stressor is any event, situation, or external stimulus that causes a stress response in the body. Common types of stressors include financial, social, and occupational stressors, or those due to ...

Patchy alopecia areata involves patches of hair loss on the scalp; it occasionally happens on other areas of the body, too. This is the most common type of alopecia areata, and it tends to cause hair ...

Pancreatic adenocarcinoma is by far the most common subtype of pancreatic cancer, but there are many other subtypes. Your pancreas is an organ behind your stomach that helps with digestion and hormone ...

If you’re standing at the counter at the gun shop looking at all the handguns for sale, it can be a bit overwhelming because it seems like there are hundreds of different types of handguns to choose ...

Rifle shooters are persnickety and opinionated—and they should be. The task of sending a small piece of metal faster than the speed of sound to a precise point of impact demands a certain kind of ...