Skip navigation

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS
A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

Results 1 - 10 of 13,831 for They
  1. ... that play many critical roles in the body. They do most of the work in cells and ... of chemical reactions that take place in cells. They also assist with the formation of new molecules ...
  2. ... protein production. Once cells finish making a protein, they quickly break down the mRNA. mRNA from vaccines ... are not exposed to the virus, nor can they become infected with the virus by the vaccine.) ...
  3. Body Lice (National Library of Medicine)  
    ... live and lay nits (lice eggs) on clothing. They are parasites, and they need to feed on human blood to survive. They usually only move to the skin to feed. ...
  4. Antibiotic Resistance (National Library of Medicine)  
    ... are medicines that fight bacterial infections. Used properly, they can save lives. But there is a growing ... can be difficult and sometimes impossible to treat. They can spread to other people. Methicillin-resistant Staphylococcus ...
  5. Hearing Aids (National Library of Medicine)  
    ... medicines. There are different types of hearing aids. They differ by size, their placement on or inside the ear, and how much they amplify sound. The hearing aid that will work ...
  6. Mood Disorders (National Library of Medicine)  
    ... feel sad or irritable from time to time. They may say they're in a bad mood. A mood disorder ...
  7. Abscess (National Library of Medicine)  
    ... to abscesses. Skin abscesses are easy to detect. They are red, raised and painful. Abscesses inside your ...
  8. Mosquito Bites (National Library of Medicine)  
    ... drink a very small amount of their blood. They need protein and iron from blood to produce eggs. After drinking blood, they find some standing water and lay their eggs ...
  9. Pubic Lice (National Library of Medicine)  
    ... in the pubic or genital area of humans. They are also sometimes found on other coarse body ... exposure or abuse. Pubic lice are parasites, and they need to feed on human blood to survive. ...
  10. Vaccine Safety (National Library of Medicine)  
    ... play an important role in keeping us healthy. They protect us from serious and sometimes deadly diseases. ... germs have been killed or weakened enough that they won't make you sick. Some vaccines only ...
previous · 1 · 2 · 3 · 4 · 5 · 6 · 7 · 8 · 9 · 10 · next