I am planning to take a detour from genetics and biology. Today I want to honor the season of fall. This is the first day of fall. This means that the summer is officially over. It also signifies that the summer fun is gone and we have to brace ourselves for winter! But we are also happy to see the wonderful fall colors.
Abstract The immune system is an essential body system that enables the organisms to launch attacks against the pathogens. The immune system comprises two types of defenses: adaptive and innate. The innate immune system consists of physical barriers like skin, chemicals in the blood. This type of immunity system is non-specific. This means it can attack any type of pathogen whether it is a virus or bacteria. The adaptive immune system, on the other hand, can provide advanced protection from pathogens that can cause harm to the body. The adaptive immune system has its further division which indicates the difference in the adopted methods of response. These differences between the humoral and the cell-mediated response are delineated through this review paper. There are markers on the T and B lymphocyte cells known as the MHC-class markers, that are crucial to distinguish between self and foreign cells. With these markers, the immune system can launch a response against the inva...