Download Blood Type Unknown Summary Pics. Unknown ratings & reviews explanation. Blood type summary by stephen greenleaf.
Watch this amazing video about the blood type ab people. Summary of abo and rh blood types within the united states. By the end of this section, you will be able to:
This category is for people whose blood types are not publicly known and written as unknown on their profile.
But why we have blood types and what purpose they serve is still largely unknown, and very little is known about their links to viruses and disease. It is taken so seriously that some people are discriminated because of blood types, as we know them, were discovered by an austrian scientist in 1900. You may even know if you're rhesus positive or negative. We include products we think are useful for our readers.