Yahoo Answers is shutting down on May 4th, 2021 (Eastern Time) and beginning April 20th, 2021 (Eastern Time) the Yahoo Answers website will be in read-only mode. There will be no changes to other Yahoo properties or services, or your Yahoo account. You can find more information about the Yahoo Answers shutdown and how to download your data on this help page.
Trending News
Promoted
what is the difference between varying blood types and how many are there in the animal kingdom?
1 Answer
Relevance
- BloodDocLv 74 years agoFavorite Answer
Blood groups/systems are determined by the presence or absence of proteins, sugars and/or lipids on/within the red cell membrane. Besides the ABO and Rh groups, there are at least 30 additional blood groups that are important in immunohematology. An excellent review may be found at the National Library of Medicine web site, listed below:
Source(s): Medical Director - regional blood center Associate Professor of Pathology - southern U.S. medical college
Still have questions? Get your answers by asking now.