antigens
An example of a protein that helps fight off infection is antibodies.
They are antibodies that you are born with an occur without exposure to foreign. A good example would be found in an O negative individual. They have A and B antibodies in their plasma.
Antibodies
antibodies
The body usually forms antibodies in response to invasion by a foreign material.
do you mean antigens? An antigen is any (foreign) substance that stimulates an immune reaction.
Antigen refers to any foreign substance which on entering the body stimulates the production of antibodies in the body of the individual as a part of the immune response. These foreign substances can be toxins, bacteria, virus, foreign blood cells or the cells of the transplated organs.
a toxin or other foreign substance that induces an immune response in the body, especially the production of antibodies.
Antigenan·ti·gen/ˈantijən/Noun:A toxin or other foreign substance that induces an immune response in the body, esp. the production of antibodies.
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.
antigen-a toxin or other foreign substance that induces an immune response in the body, especially the production of antibodies.Antibodies-a blood protein produced in response to and counteracting a specific antigen. Antibodies combine chemically with substances that the body recognizes as alien, such as bacteria, viruses, and foreign substances in the blood.
lymphocytes make antibodies by first getting the antigen marker from a pathogen. Then, using a 'toolkit' of various protein fragments, they use the marker as a 'blueprint' to make the antibody.
Antibodies are used to fight from foreign particles (pathogen generally) entering in the body of an individual.
An antigen.
An example of a protein that helps fight off infection is antibodies.
Antibody
An antigen stimulates the production of antibodies. These are either naturally acquired, like from mother to baby (via breast feeding and within the womb). Actively acquired, like you get chicken pox (varicella) and your body fights it off, but because your body has seen the virus it now knows how to fight it. There is also Passively Acquired immunities which are acheived via immunizations where a "dead" or small amount of virus is injected into your body so that your immune system can recognize it and know how to fight it if exposed. An antibody is a "memory cell" it identifies and kills the invader that it has seen before. HIV/ AIDS interrupts that process because it enters the nucleus and "takes over" the cells that identify the invaders... it's kind of a "smart virus".