Most people consider A, B, AB and O when they hear the phrase “blood varieties.” These letters classify blood varieties according to whether crimson blood cells contain the A antigen or B antigen. This really is known as the ABO technique. Blood kinds are both “optimistic” or “unfavorable,” depending upon https://andersonrhvmy.blogcudinti.com/36842489/the-best-side-of-cubensis-blobs