O+ blood type is determined by the presence or absence of specific antigens on the surface of red blood cells.
Understanding Blood Types
Blood types are categorized based on the presence or absence of certain antigens—specifically, A and B antigens, and the Rh factor. These antigens are proteins or sugars that can trigger an immune response if they are not compatible with a person's own blood.
O+ Blood Type Explained
- Absence of A and B Antigens: According to the reference, individuals with O+ blood lack both the A and B antigens on the surface of their red blood cells.
- Presence of Rh Factor: The "+" in O+ indicates the presence of the Rh factor (also known as the Rh antigen). If this factor is present, the blood type is considered "positive."
Key Characteristics of O+ Blood Type
| Feature | Description |
|---|---|
| A Antigen | Absent |
| B Antigen | Absent |
| Rh Factor | Present |
Therefore, having O+ blood type means your red blood cells do not have A or B antigens, but they do have the Rh factor on their surface.
