GRE topic Test: Biology aid » pet Biology » Immunobiology » knowledge Antibodies and Antigens

An antibody is very details and will only attach to one antigen. As soon as it does, the antibody deserve to signal the virus or infected cell to be damaged by macrophages and also other phagocytic cell in the body, such as cytotoxic T-cells. The antibodies themselves cannot damage the pathogen.

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T-cells serve vital functions in the communication and stimulation that antibody production, but do not actually produce antibodies.


Antibodies are component of the adaptive immune response, which means that they are formed later in an infection. Due to the fact that both recognition sites have the exact same structure, they space responsive to only one kind of antigen. Lock are situated on the exterior of B cells, and also can be released freely into the plasma by plasma cells.

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Which antibody form is may be to overcome the placental obstacle in bespeak to carry out temporary passive immunity because that the fetus?


Placental crossing is done mostly by IgG antibodies. This fast-acting antibodies carry out temporary immunity for the fetus until it is may be to have its own immune system create sufficient antibody amounts.



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