yes pollens can act as antigen for those who have allergic,it can cause various respiratory diseases including Asthma.
An antigen isn't supposed to be in your body. That is what an antigen means. So, although there are likely many (bacteria, viruses, pollen, etc.), there is no set number.
Pollen is not unicellular. This is because pollen is not yet living and is only acting like a spore would act.
An antigen is any substance that causes your immune system to produce antibodies against it. An antigen may be a foreign substance from the environment. If you get a vaccine for rubella, the antibody formed will not act against mumps (another virus).
Another term for univalent antigen
Yes. The first signal that a T cell receives from an antigen presenting cell (dendritic cell) is MHC presenting an antigen (foreign peptide). This gives the T cell specificity to this antigen.
For some people, bee pollen acts as an antigen and gives them hives.
antigen
An antigen is a foreign substance that provokes an immune response in the body. Examples of antigens are: bacteria, pollen grains and large carbohydrates.
An antigen is a substance or molecule that, when introduced into the body, triggers the production of an antibody by the immune system, which will then kill or neutralize the antigen that is recognized as a foreign and potentially harmful invader. These invaders can be molecules such as pollen or cells such as bacteria.
An antigen is a substance that can invoke an immune response. While an antibody is the immune system's response to an antigen. Antibodies, act by directly neutralizing the antigen and/or bind to the antigen and signaling marcophages to phagocytose the antigen.
An antigen isn't supposed to be in your body. That is what an antigen means. So, although there are likely many (bacteria, viruses, pollen, etc.), there is no set number.
An antigen is any substance that causes your immune system to produce antibodies against it. An antigen may be a foreign substance from the environment, such as chemicals, bacteria, viruses, or pollen. It could be also called an irritant.
Anaphylaxis is an over response an antigen. It can be life threatening because of the swelling of the mouth and throat.
This act is called pollination. It helps in sexual reproduction.
It's a reproductive act.
It's a reproductive act.
Pollen is not unicellular. This is because pollen is not yet living and is only acting like a spore would act.