# video | How do immune cells learn to kill bacteria and viruses?

The human body, like space, is full ofstill unexplored processes. One of the most mysterious and incompletely understood biological systems is immunity, which constantly protects a person from diseases. Fortunately, researchers at the University of Texas at Austin have made a big step in studying it - they were the first in history who saw how T-lymphocyte cells learn to distinguish between dangerous and safe cells. Seeing this, they shared a recorded video with all the people.

T-lymphocytes play a huge role in congenitalimmunity, but initially do not know which bacteria and viruses they need to kill. A kind of training occurs in the human thymus, which is also called the thymus gland. Sometimes there are mistakes in the learning process, and they begin to kill innocent cells, which causes autoimmune disorders, such as type 1 diabetes.

The video shows two types of cells: violet T-lymphocytes and yellow dendritic cells. The main function of dendritic cells is the presentation of the antigen, which is the essence of the training. On the video, some cells become white, which means that T-Lymphocyte has taken a harmless cell as a viral cell.

It was possible to follow the training of cellsthanks to lasers with short pulses that scan living tissue at intervals of 15 seconds. Researchers are hoping that the new discovery will create new methods of dealing with autoimmune disorders, reducing the number of errors in the thymus.

On the subject of immunity, we have another interestingmaterial - did you know that his hard work can cause caries? We recommend reading about the discovery of researchers from the University of Toronto right now.

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