A counter acting agent, is otherwise called an immunoglobulin (Ig), which is a substantial, Y-formed protein delivered for the most part by plasma cells that is utilized by the resistant framework to kill pathogens, for example, pathogenic microscopic organisms and infections. The counter acting agent perceives an interesting particle of the pathogen, called an antigen, through the Fabs variable district. Each tip of the "Y" of an immune response contains a paratope (undifferentiated from a bolt) that is particular for one specific epitope (also, similar to a key) on an antigen, enabling these two structures to tie together with exactness. Utilizing this coupling component, a counter acting agent can label an organism or a contaminated cell for assault by different parts of the resistant framework, or can kill its objective specifically (for instance, by repressing a piece of a microorganism that is basic for its attack and survival). Contingent upon the antigen, the coupling may block the natural procedure causing the infection or may actuate macrophages to obliterate the outside substance. The capacity of a counter acting agent to speak with alternate parts of the safe framework is intervened by means of its Fc district (situated at the base of the "Y"), which contains a saved glycosylation site associated with these connections. The creation of antibodies is the primary capacity of the humoral insusceptible framework.