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The group of proteins that normally circulate in the blood in an inactive form and are activated by contact with nonspecific antigens such as foreign blood cells or bacteria?
Wiki User
∙ 13y ago
complement
Wiki User
∙ 13y ago
Wiki User
∙ 12y agoComplement.
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How are helper t cells activated?
It is a type of leukocyte, or white blood cell, but it has no ability to ingest or destroy invading bacteria. It activates other white blood cells or antibodies to react with the invading organism.
How is invading bacteria detroyed?
The bacteria has tiny, oddly-shaped molecules on it's surface, which are different for every type of bacteria, these are called antigens. When a special type of white blood cell, called a lymphocyte, realises an invading bacteria is in the bloodstream, it starts to make tiny connectors called antibodies. These antibodies fit the antigens on the bacteria's surface, and join many bacteria together. Once lots of bacteria have been joined together, another type of white blood cell, called a phagocyte, engulfs them, and it will usually take a few days for all the bacteria to be destroyed.
What is the job of white blood cell?
To produce antibodies, engulf antigens and produce antitoxin. They do this to protect the body of disease-causing bacteria and viruses.
How does a natural killer cell defend the body against infection?
they spot infected cells and kill them, basically.
What are 3 examples of an 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.
What do lingual tonsils inhibit?
Antigens and bacteria
What prodrug is activated by colonic bacteria when given orally?
Balsalazide-azo-bonded prodrug, activated by bacteria in the colon
What typoes of cells produce antigens?
All cells produce antigens, or cell surface markers. The only question is whether the antigens are self antigens which means they belong in the body or they're foreign antigens which means they are an invading bacteria or virus (or a cancerous cell).
How are helper t cells activated?
It is a type of leukocyte, or white blood cell, but it has no ability to ingest or destroy invading bacteria. It activates other white blood cells or antibodies to react with the invading organism.
Serological testing is based on the fact that antibodies react specifically with an anigen all bacteria have the same antigens or the human body makes antibodies against bacteria?
AnswerThe human body makes specific antibodies to specific antigens (ex. proteins on a bacterial membrane) that it encounters. Bacteria do not all have the same antigens.* antibodies react specifically with an antigen
Do all bacteria have antigens if so what would happen if it entered your system?
yes they do
Is skin specific or nonspecific?
Yes, the skin is the most important nonspecific defense. This is because your oil and sweat glands are acidic.
Which drug is a prodrug that is activated by colonic bacteria when given orally?
Balsalazide
How is invading bacteria detroyed?
The bacteria has tiny, oddly-shaped molecules on it's surface, which are different for every type of bacteria, these are called antigens. When a special type of white blood cell, called a lymphocyte, realises an invading bacteria is in the bloodstream, it starts to make tiny connectors called antibodies. These antibodies fit the antigens on the bacteria's surface, and join many bacteria together. Once lots of bacteria have been joined together, another type of white blood cell, called a phagocyte, engulfs them, and it will usually take a few days for all the bacteria to be destroyed.
What are molecules on the outer surface of a cell that identify it as long friend or for?
Antigens- Each human being has his or her own unique cell surface antigens, as do to all other living things, including bacteria, virus, animals, and plants.
What is the job of white blood cell?
To produce antibodies, engulf antigens and produce antitoxin. They do this to protect the body of disease-causing bacteria and viruses.
What is the use of genetically engineered bacteria?
The can produce antigens useful in making vaccines without the harmful parts of the original disease organism.
