Name____________________________________________
... 10. _____ destroy body cells that are infected with a pathogen. 11. _____ is a white blood cell that surrounds and engulfs pathogens. 12. _____ can be passed from mother to child and occurs without having to become sick. 13. _____ are produced by body cells that have been infected by a virus. 14. __ ...
... 10. _____ destroy body cells that are infected with a pathogen. 11. _____ is a white blood cell that surrounds and engulfs pathogens. 12. _____ can be passed from mother to child and occurs without having to become sick. 13. _____ are produced by body cells that have been infected by a virus. 14. __ ...
Immunity - AState.edu
... Two cell types give us the immune response; both are lymphocytes, which are a type of leukocyte, or white blood cell. B lymphocytes or B cells T lymphocytes or T cells ...
... Two cell types give us the immune response; both are lymphocytes, which are a type of leukocyte, or white blood cell. B lymphocytes or B cells T lymphocytes or T cells ...
Bacterial defense against specific immune responses
... hide their own antigenic surface from the immunological system. ...
... hide their own antigenic surface from the immunological system. ...
Blood Groups and Immunogenetics
... Recognition that blood types have relatively simple inheritance patterns led to their use in paternity cases, forensics, and similar "identity" cases. Blood typing relies on antigen-antibody reactions and thus requires some understanding of our immune system. "Acquired immunity" refers to the fact t ...
... Recognition that blood types have relatively simple inheritance patterns led to their use in paternity cases, forensics, and similar "identity" cases. Blood typing relies on antigen-antibody reactions and thus requires some understanding of our immune system. "Acquired immunity" refers to the fact t ...
T cell activation
... • Destroy cells with foreign antigens • Activation of NK cells: • Recognition of unusual surface proteins • Rotation of the Golgi toward the target cell and production of ...
... • Destroy cells with foreign antigens • Activation of NK cells: • Recognition of unusual surface proteins • Rotation of the Golgi toward the target cell and production of ...
Immunity - Fort Bend ISD / Homepage
... Triggered by tissue damage Blood supply to area increases Chemical signals are released ...
... Triggered by tissue damage Blood supply to area increases Chemical signals are released ...
Preventing Communicable Diseases
... Some T cells and B cells that have been activated by antigens become memory cells. When memory cells recognize a former invader, the immune system uses antibodies and killer T cells in a quick defense to stop it. If it enters your body again, antibodies will attack the virus immediately, protecting ...
... Some T cells and B cells that have been activated by antigens become memory cells. When memory cells recognize a former invader, the immune system uses antibodies and killer T cells in a quick defense to stop it. If it enters your body again, antibodies will attack the virus immediately, protecting ...
IMMUNITY
... – cell surface glycoproteins encoded by a family of genes called the major histocompatibility ...
... – cell surface glycoproteins encoded by a family of genes called the major histocompatibility ...
Case study slides by Lara Alshabatat
... ( nondefective ) allogeneic cells and thus does not require to be processed and presented by the defective cells , However, the failure of her lymphocytes to respond to tetanus toxoid in vitro resulted from the fact that , in this situation , there were no cells that could present antigen on MHC cla ...
... ( nondefective ) allogeneic cells and thus does not require to be processed and presented by the defective cells , However, the failure of her lymphocytes to respond to tetanus toxoid in vitro resulted from the fact that , in this situation , there were no cells that could present antigen on MHC cla ...
Basic Body Systems Unit 6 Immune System Lecture
... • White blood cells called B and T cells send signals to the immune system that a foreign substance is present called antigens • The immune system makes antibodies that fight off these specific antigens ...
... • White blood cells called B and T cells send signals to the immune system that a foreign substance is present called antigens • The immune system makes antibodies that fight off these specific antigens ...
Chapter 8
... Immunity that requires cell to cell contact. Carried out by T cells: Develop in the thymus. Only recognize antigen associated with self-protein. T cytotoxic cells: Important in defense against: Cancer cells Self cells infected with fungi, viruses, protozoans, and bacteria. T helper c ...
... Immunity that requires cell to cell contact. Carried out by T cells: Develop in the thymus. Only recognize antigen associated with self-protein. T cytotoxic cells: Important in defense against: Cancer cells Self cells infected with fungi, viruses, protozoans, and bacteria. T helper c ...
Level 2 ZOOL 21014 Immunity
... • Cooperate with B cells to help increase antibody production from B cells Memory T cells • Recognize original invading antigen. When pathogen invades the body later stage, the memory cells start a faster reaction than during the first invasion • Pathogen is destroyed, before any sign of the disease ...
... • Cooperate with B cells to help increase antibody production from B cells Memory T cells • Recognize original invading antigen. When pathogen invades the body later stage, the memory cells start a faster reaction than during the first invasion • Pathogen is destroyed, before any sign of the disease ...
of innate immunity
... here for neutrophils. (1) Inflammatory mediators secreted by alarm cells in response to PAMPs, and perhaps by direct action of PAMPson endothelial cells, stimulate endothelial cells to express E- and P-selectins on their luminal surface; the latter is stored in specialised granules (Webel-Palade bod ...
... here for neutrophils. (1) Inflammatory mediators secreted by alarm cells in response to PAMPs, and perhaps by direct action of PAMPson endothelial cells, stimulate endothelial cells to express E- and P-selectins on their luminal surface; the latter is stored in specialised granules (Webel-Palade bod ...
Skin and Mucus: Pathogens-Away!
... occurs when the person is exposed to a live pathogen, develops the disease, becomes immune as a result of the primary immune response Artificially acquired active immunity can be induced by a vaccine, a substance that contains the antigen (vaccine stimulates a primary response against the antige ...
... occurs when the person is exposed to a live pathogen, develops the disease, becomes immune as a result of the primary immune response Artificially acquired active immunity can be induced by a vaccine, a substance that contains the antigen (vaccine stimulates a primary response against the antige ...
9-10 lectureTCR_LÁ
... cells, or calm joints inflamed by rheumatoid arthritis. The antibody binds to a receptor molecule called CD28 on the surface of the immune system's infectionfighting T cells. (Nature March 17 2006) Scientists who work in the field say there are several possible ways that the drug could have triggere ...
... cells, or calm joints inflamed by rheumatoid arthritis. The antibody binds to a receptor molecule called CD28 on the surface of the immune system's infectionfighting T cells. (Nature March 17 2006) Scientists who work in the field say there are several possible ways that the drug could have triggere ...
Lecture notes
... B lymphocytes: this could not happen as efficiently within the infected tissues themselves. This is why antigens are carried from sites of infection to secondary lymphoid tissues where the relatively few lymphocytes with receptors specific for any particular antigen are to be found amongst the milli ...
... B lymphocytes: this could not happen as efficiently within the infected tissues themselves. This is why antigens are carried from sites of infection to secondary lymphoid tissues where the relatively few lymphocytes with receptors specific for any particular antigen are to be found amongst the milli ...
Pathogens and the immune system
... • Have B cell receptors on surface • 100 million different types of B cells, each with different surface receptors • B cell receptors are so diverse they can recognize every organic molecule ...
... • Have B cell receptors on surface • 100 million different types of B cells, each with different surface receptors • B cell receptors are so diverse they can recognize every organic molecule ...
Lymphatic System - bushelman-hap
... - The spleen, thymus gland, and tonsils - Peyer’s patches and bits of lymphatic tissue scattered in connective tissue - All are composed of reticular connective tissue and all help protect the body ...
... - The spleen, thymus gland, and tonsils - Peyer’s patches and bits of lymphatic tissue scattered in connective tissue - All are composed of reticular connective tissue and all help protect the body ...
Phagocyte
Phagocytes are cells that protect the body by ingesting (phagocytosing) harmful foreign particles, bacteria, and dead or dying cells. Their name comes from the Greek phagein, ""to eat"" or ""devour"", and ""-cyte"", the suffix in biology denoting ""cell"", from the Greek kutos, ""hollow vessel"". They are essential for fighting infections and for subsequent immunity. Phagocytes are important throughout the animal kingdom and are highly developed within vertebrates. One litre of human blood contains about six billion phagocytes. They were first discovered in 1882 by Ilya Ilyich Mechnikov while he was studying starfish larvae. Mechnikov was awarded the 1908 Nobel Prize in Physiology or Medicine for his discovery. Phagocytes occur in many species; some amoebae behave like macrophage phagocytes, which suggests that phagocytes appeared early in the evolution of life.Phagocytes of humans and other animals are called ""professional"" or ""non-professional"" depending on how effective they are at phagocytosis. The professional phagocytes include many types of white blood cells (such as neutrophils, monocytes, macrophages, mast cells, and dendritic cells). The main difference between professional and non-professional phagocytes is that the professional phagocytes have molecules called receptors on their surfaces that can detect harmful objects, such as bacteria, that are not normally found in the body. Phagocytes are crucial in fighting infections, as well as in maintaining healthy tissues by removing dead and dying cells that have reached the end of their lifespan.During an infection, chemical signals attract phagocytes to places where the pathogen has invaded the body. These chemicals may come from bacteria or from other phagocytes already present. The phagocytes move by a method called chemotaxis. When phagocytes come into contact with bacteria, the receptors on the phagocyte's surface will bind to them. This binding will lead to the engulfing of the bacteria by the phagocyte. Some phagocytes kill the ingested pathogen with oxidants and nitric oxide. After phagocytosis, macrophages and dendritic cells can also participate in antigen presentation, a process in which a phagocyte moves parts of the ingested material back to its surface. This material is then displayed to other cells of the immune system. Some phagocytes then travel to the body's lymph nodes and display the material to white blood cells called lymphocytes. This process is important in building immunity, and many pathogens have evolved methods to evade attacks by phagocytes.