antibodies
The immune system.
Cytokines play an important role in fighting some forms of bacterial infections. The cytokines basically tell the immune system that an infection is there so that the immune system can handle it.
Proteins
The spleen produces blood cells, and forms part of the immune system.
The immune system can be the cause of many different forms of arthritis the main one being Rheumatoid arthritis.
Body has got immune system. This immune system or the body immunity forms the antibodies to fight the viruses. The immunity against the viruses is usually life long.
Broadly speaking, you can have an immune system that does not do enough to protect the body from infection, which is called an immune deficiency, and you can also have an overactive immune system that attacks the body's own tissues, which is called an autoimmune disease. Both of these types of problems come in a variety of forms with a variety of causes.
When the body detects a foreign substance, such as a pathogen or allergen, the immune system is activated. This typically involves the production of antibodies to target and neutralize the invader, as well as the recruitment of immune cells to help eliminate the threat. Inflammatory responses like swelling, redness, and fever may also occur as the body works to fight off the foreign substance.
rheumatoid arthritis
antibodies are immune cells which are present in the immune system and it helps in , if any foregin particles or antigens enters in our body it kills that antigen or it binds to the antigen and forms the antigen _antibody complex
Impetigo can cause other diseases by weakening the immune system, allowing other forms of bacteria and viruses to enter the body.
A substance that stimulates the immune system to develop acquired immunity is called an "antigen." Antigens can be found in pathogens like viruses and bacteria, or in vaccines, which contain weakened or inactivated forms of these pathogens. When the immune system encounters an antigen, it triggers a response that leads to the production of antibodies, providing long-term immunity against future infections.