Heavy drinking can cause the number of oxygen-carrying red blood cells to be abnormally low. This condition, known as anemia, can trigger a host of symptoms, including fatigue, shortness of breath, and lightheadedness.
The human leukocyte antigen system or complex is a gene complex encoding the major histocompatibility complex proteins in humans. These cell-surface proteins are responsible for the regulation of the immune system in humans. The HLA gene complex resides on a 3 Mbp stretch within chromosome 6p21. HLA genes are highly polymorphic, which means that they have many different alleles, allowing them to fine-tune the adaptive immune system. The proteins encoded by certain genes are also known as antigen
White cells found in blood were found to have a high concentration of HLA. It was also discovered that there were many different types of HLA, and the different HLA types varied between people that were not biologically related. Because of the high variability of HLA types among people, HLA was used to answer questions about biological relationships. The power of exclusion of HLA testing is 80% and coupled with ABO and serological testing is about 90%.