No, antibodies are produced by your body to fight infection.
B lymphocytes are the cells that secrete the antibodies in response to infection in body.
Proteins.
B-cells are lymphocytes that fight off extracellular infection and call other leukocytes (white blood cells; I.E. T-cells) to the site of infection. they also make antibodies.
Yes, by certain white cells in the blood. Some of these cells produce free floating antibodies while others present their antibodies on their surface receptors. These different systems fight infection by different kinds of organisms.
No, an allergic reaction is typically caused by a release of histamines from the eosinophils. Antibodies are produced by lymphocytes in response to a bacterial infection.
When you have immunity, your body has antibodies against a foreign organisms (i.e. bacteria and virus) . Usually this is achieved by exposure to these organisms. That is: 1. you get an infection (or vaccination with inactive parts of a bacteria or virus), 2.your body defeats the invader, 3. some of the cells in your body "remember" which antibodies they produced , 4. next time you are exposed to the same foreign organism, these cells quickly produce antibodies so you won´t get ill (i.e. you are immune) When you have passive immunity, it usually is due to a vaccination with antibodies. Your body hasn´t produced the antibodies on its own. So once the antibodies become too old and inactive, you are not immune any longer, and when you encounter the foreign organism again, it will be like a novel infection, because it has no memory cells, which can respond quickly.
One of the function of the blood is to circulate antibodies to combat infection.
When you have immunity, your body has antibodies against a foreign organisms (i.e. bacteria and virus) . Usually this is achieved by exposure to these organisms. That is: 1. you get an infection (or vaccination with inactive parts of a bacteria or virus), 2.your body defeats the invader, 3. some of the cells in your body "remember" which antibodies they produced , 4. next time you are exposed to the same foreign organism, these cells quickly produce antibodies so you won´t get ill (i.e. you are immune) When you have passive immunity, it usually is due to a vaccination with antibodies. Your body hasn´t produced the antibodies on its own. So once the antibodies become too old and inactive, you are not immune any longer, and when you encounter the foreign organism again, it will be like a novel infection, because it has no memory cells, which can respond quickly.
Are organisms that do not normally inhabit the body. When they do, however, they are apt to produce an infection and/or illness.
No
Antibodies
No; antibodies cannot produce themselves.