No. Hapten is an antigen whic has low molecular weight and does not trigger immune system.
The antigens cause an immune response leading to production of antibodies thereby causing the host to be resistant to subsequent infection
Antigen is a substance that can induce the generation of antibodies, any substance that can induce immune response. Antibody is a protective protein produced by the body in response to an antigen.
The adaptive immune system was developed in higher vertebrates to combat pathogens and antigens. These can include viruses, bacteria, and anything else that can cause the immune system to launch an immune response.
Antigens are surface membrane molecules that cause an immune reaction.
Vaccines take advantage of the body's immune system's way of fighting pathogens. When your body is exposed to some pathogen, which has various antigens on its surface, the immune system would start making antibody against those antigens. Normally, it would take sometime for your body to response with first exposure. Subsequence exposures would result in much more rapid response. Vaccines work by isolating these antigens and give it to you exposing the immune system. You should not get the disease, since only the antigens are given instead of the full pathogen. Sometimes, it may be difficult to completely separate the antigens, so they weaken to pathogens to the point that they would not cause the infection in healthy individuals. These are call live attenuated vaccines. Exam of these are MMR, Varicella Vaccines, Flu mist.
Because they are seen as pathogen invaders by the immune system.
passive
Yes, anything that triggers your immune system to have a response would be considered an antigen. H1N1 is a virus that causes influenza, and the detection of the presence of the virus will cause our immune systems to attack it. The immune system creates antibodies which can grab antigens to flag them as targets and disable them, which are then attacked and destroyed by other cells from the immune system. Once the body has developed antibodies to match the antigens of a particular invader , the pattern of those antibodies is stored by the immune system, and duplicates can be readily produced to grab that invader, if it or one like it, is detected again. That is what gives you immunity.
The main cause of immune system disorder is expose of closed self antigens those were not recognised by body immune system's antibodies against these self antigens started to produced that combined with it and causes inflammations
Immunity.
It results from a depressed or absent immune response.
Antibodies are produced in response to antigens. If you get infected with one of the 200 viruses that cause colds, these viruses are antigens and your body will respond by making antibodies. The antibodies will inactivate the virus. It usually takes 7-10 for the process to be complete.