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 - 4 of 4 for Host
  1. Bone Marrow Transplantation (National Library of Medicine)  
    Bone marrow is the spongy tissue inside some of your bones, such as your hip and thigh bones. It contains immature cells, called stem cells. The stem cells ...
  2. Breast Cancer (National Library of Medicine)  
    What is breast cancer? Breast cancer is a cancer that starts in breast tissue. It happens when cells in the breast change and grow out of control. The ...
  3. Immune System and Disorders (National Library of Medicine)  
    What is the immune system? Your immune system is a complex network of cells, tissues, and organs. Together they help the body fight infections and other ...
  4. Stem Cells (National Library of Medicine)  
    Stem cells are cells with the potential to develop into many different types of cells in the body. They serve as a repair system for the body. There are two ...