6 . List the antigens present on the red blood cells for the major blood types.

The major blood types are determined by the presence or absence of specific antigens on the surface of red blood cells. Here is a list of the antigens present for each major blood type:<br /><br />1. **Type A**: <br /> - Antigen A<br /><br />2. **Type B**: <br /> - Antigen B<br /><br />3. **Type AB**: <br /> - Both Antigen A and Antigen B<br /><br />4. **Type O**: <br /> - Neither Antigen A nor Antigen B<br /><br />Additionally, the Rh factor is another important antigen that can be present (+) or absent (-):<br /><br />- **Rh-positive (e.g., A+, B+, AB+, O+)**: Presence of the Rh antigen<br />- **Rh-negative (e.g., A-, B-, AB-, O-)**: Absence of the Rh antigen<br /><br />These antigens play a crucial role in blood transfusions and compatibility between donors and recipients.