honeypot link
skip to main content
  • follow us on facebook
  • follow us on Instagram
  • follow us on Youtube
  • follow us on Twitter
MSDMERCK MANUALConsumer Version
HEALTH TOPICSHEALTHY LIVINGSYMPTOMSEMERGENCIESDRUG INFORESOURCESCOMMENTARYABOUT US
homeHEALTH TOPICSHEALTHY LIVING
Search icon
  1. Home/
  2. Quick Facts: Blood Disorders/
  3. Biology of Blood/
    Biology of Blood
    • Overview of Blood
      • What does blood do?
      • What is in blood?
        • Plasma
        • Red blood cells
        • White blood cells
        • Platelets
      • What problems can develop in your blood?
    MSD
    • About
    • Disclaimer
    • Permissions
    • Privacy
    • Cookie Preferences
    • Terms of use
    • Partnerships
    • Contact Us
    • Global Medical Knowledge
    • Veterinary Edition
    • Print Editions
    • Mobile App
    • follow us on facebook
    • follow us on Youtube
    • follow us on Twitter
    • follow us on Instagram
    This icon serves as a link to download the eSSENTIAL Accessibility assistive technology app for individuals with physical disabilities. It is featured as part of our commitment to diversity and inclusion. M
    • follow us on facebook
    • follow us on Youtube
    • follow us on Twitter
    • follow us on Instagram
    This icon serves as a link to download the eSSENTIAL Accessibility assistive technology app for individuals with physical disabilities. It is featured as part of our commitment to diversity and inclusion. M
    MSD

    Copyright© 2025Merck & Co., Inc., Rahway, NJ, USA and its affiliates. All rights reserved.