What is humoral response effective against?

The humoral response is primarily effective against extracellular pathogens, such as bacteria and viruses that are present in bodily fluids. It involves the production of antibodies by B cells, which can neutralize pathogens, opsonize them for phagocytosis, and activate the complement system. This response plays a crucial role in preventing infections and aiding in the clearance of pathogens from the body. Additionally, it also contributes to long-term immunity through the formation of memory B cells.