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Immune System
This category is for questions about how our bodies identify and fight off disease, infection or pathogens through specialized cells, tissues and organs. The system that does this is called the immune system. It produces antibodies which recognize intruders and neutralizes potentially pathogenic organisms or substances.
4,548 Questions
What cells produce antibodies and destroy pathogens?
B cells are the cells that produce antibodies, which are proteins that can neutralize pathogens. Natural killer (NK) cells are a type of lymphocyte that can directly destroy infected cells and cancer cells.
If your monocyte count is 15 percent and the normal range is 5-12 percent is this normal?
Usually, a monocyte count of 15% is considered to be slightly elevated. If this fact does not come as a result of a current infection or connected with other abnormal blood values, you should check it after a month or so again.
Special organs that store leukocytes are the?
Special organs that store leukocytes are the spleen, lymph nodes, and bone marrow. These organs play a crucial role in the immune system by storing and producing white blood cells to help fight off infections and diseases.
What is a substance that blocks the ability of a pathogen to harm the body?
Antibiotics are substances that can block the ability of pathogens to harm the body by inhibiting their growth or killing them.
Are antibodies and cell receptors similar?
Antibodies and cell receptors both play roles in detecting and responding to specific molecules. However, antibodies are proteins produced by the immune system to recognize and neutralize foreign invaders like pathogens, while cell receptors are proteins on cell surfaces that bind with specific signaling molecules to trigger cellular responses.
The Rh- person has no Rh antigens, so their body does not recognize the Rh antigens on the Rh+ donor blood as foreign. However, the B antigens on the donor blood are recognized by the recipient's immune system as foreign, leading to an immune response against the B antigens. This can result in a transfusion reaction if not properly managed.
How Do antibodies kill microbes inside the human body?
Antibodies (also called Immunoglobulins (Ig)) are special proteins. They are found in the blood or other body fluids of vertebrates. The immune system uses antibodies to identify foreign objects, such as bacteria and viruses. These objects are then neutralized, so that they can no longer cause problems and diseases.
When the antibody finds the germ it's after, it "knows" because of its special antigen. If the antibody can insert its antigen into the germ, it will go to work either destroying it by blocking it from "germ food" (cells), or calling white blood cells to eat it, thereby killing whatever it was after.
What are the 3types of t cells?
The three main types of T cells are: helper T cells, cytotoxic T cells, and regulatory T cells. Helper T cells assist in activating other immune cells, cytotoxic T cells directly kill infected or abnormal cells, and regulatory T cells help control the immune response to prevent excessive reactions.
What type of immune cells are in the Swine Flu?
None. Swine flu is an illness caused by the pathogen known now as swine flu virus, A-H1N1/09 influenza. The illness contains no immune cells, nor does the virus. Your body responds to the presence of the virus with an immune response that sends your own immune cells to the area of your body where the flu virus has invaded. It is your body's immune cells that enter the "fight" and eventually get rid of the virus by constructing the type of immune cells called antibodies that are a perfect fit to inactivate the specific virus so it can no longer cause cell damage and symptoms of the flu. Your body then remembers the antibodies that worked to inactivate the virus so it can use them in the future if you are ever exposed to that virus again.
What are your bodys first line defenses against pathogens in general?
Your skin is the first line of defense.
What is a foreign chemical that stimulates the production of antibodies?
An antigen is a foreign chemical that stimulates the production of antibodies by the immune system. Antigens can be bacteria, viruses, toxins, or other substances that are recognized as foreign by the body.
How does the shape of an antibody affect its functioning?
The shape of an antibody is crucial for its functioning because it determines the specificity of binding to antigens. The unique structure of the antibody allows it to recognize and bind specifically to a particular antigen, triggering immune responses. Changes in the shape of the antibody can affect its ability to bind to antigens and mediate immune responses effectively.
Explain how the cells of the immune system evoke and maintain an immune response?
Cells of the immune system, such as T and B lymphocytes, recognize and respond to foreign invaders, called antigens, by producing specific antibodies or initiating cell-mediated responses. After the initial immune response, memory cells are formed, which help maintain a faster and stronger response upon subsequent exposure to the same antigen. This process of evoking and maintaining an immune response is crucial for protecting the body against pathogens and maintaining immunity.
What would happen if your immune system stopped working?
If your immune system stopped working, your body would be unable to defend itself against infections and diseases. This could lead to severe illnesses, recurring infections, and even life-threatening conditions. It is crucial for the immune system to function properly to protect your overall health.
Is human t-lymphotropic virus type 1 a blood borne pathogen?
Yes, human T-lymphotropic virus type 1 (HTLV-1) can be transmitted through blood transfusions, sharing needles, and from mother to child during childbirth or breastfeeding. It primarily infects T cells and can lead to diseases such as adult T-cell leukemia/lymphoma and HTLV-1-associated myelopathy/tropical spastic paraparesis.
A disease of the blood characterized by overproducing of leukocytes?
The condition described is likely leukemia, a type of cancer that starts in the bone marrow and leads to the overproduction of abnormal white blood cells. Leukemia can affect different types of white blood cells and disrupt the normal balance of blood cell production, leading to symptoms like fatigue, infections, and abnormal bleeding. Treatment for leukemia usually involves chemotherapy, targeted therapy, stem cell transplants, or a combination of these approaches.
What type of pathogens causes the fifth disease?
It is a viral infection usually seen in preschool children. It presents with typical upper respiratory syndrome symptoms and can be distinguished by the red "slapped cheek" rash on the face.
What Microorganisms to which this pathogen belongs?
This pathogen belongs to the Microorganism group of bacteria.
What are Characteristics of the skin that prevent the colonization of pathogens?
The skin's outermost layer, the epidermis, is tough and consists of dead cells that provide a physical barrier to pathogens. The skin also produces oils and acids that create an acidic environment, which is inhospitable to many pathogens. Additionally, the skin has resident beneficial bacteria that compete with harmful bacteria for resources, further preventing pathogen colonization.
Where does gas exchange and water loss occur in plants?
By opening and closing the stomata on the underside of the leaves.
Following a primary immune response the cells that give rise to memory cells are?
Following a primary immune response, memory cells are generated from activated B and T cells. These memory cells can recognize the same pathogen if encountered in the future, leading to a faster and stronger secondary immune response. Memory cells are vital for the immune system's ability to provide long-lasting protection against specific pathogens.
What are the six types of pathogens that can cause diseases?
The six types of pathogens that can cause diseases are bacteria, viruses, fungi, protozoa, prions, and parasites. Each type of pathogen has different characteristics and mechanisms of causing illness in humans.
What body's ability can destroy pathogens before they can cause disease?
The immune system can destroy pathogens before they can cause disease. It does this through mechanisms such as the production of antibodies, activation of immune cells like T cells and macrophages, and the release of cytokines to trigger an immune response against the pathogens.
Plasma cells develop from transformed b cells or t cells?
ativated B cells forms effector cells which are called plasma cells
