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Human perinatal immunity in physiological conditions and during
Human perinatal immunity in physiological conditions and during

... The intrauterine environment was long considered sterile. However, several infectious threats are already present during fetal life. This review focuses on the postnatal immunological consequences of prenatal exposure to microorganisms and related inflammatory stimuli. Both the innate and adaptive i ...
Tumor Immunology and Immunotherapy
Tumor Immunology and Immunotherapy

... Immune mechanisms of tumor rejection • Cell-mediated immunity plays a key role in tumor rejection. • Humoral immunity (antibodies) and innate immunity also play a role in the defense against tumors. ...
Louis Kock - TB-IPCP
Louis Kock - TB-IPCP

... IFN-γ, GM-CSF and TNF in paradoxical TB-IRIS. IL-17, IL-18, and IL-22 have also been noted to be elevated in both paradoxical and unmasking TB-IRIS. IL-17 and IL-22 produced by innate cells(e.g. lymphoid tissue inducer/like cells,Th17,NKT cells). IL-18 is secreted by macrophages and dendritic cells. ...
researched area [6]. To date, our validation of the Leicester
researched area [6]. To date, our validation of the Leicester

... specific immune responses were compared in blood and bronchoalveolar lavage (BAL) by ELISPOT of patients with smear-negative pTB and in patients with nontuberculous pulmonary diseases. Approximately twice the number of PPD specific interferon (IFN)-c releasing BAL mononuclear cells (BALMCs) than RD- ...
Human Physiology/The Immune System
Human Physiology/The Immune System

... The immune system is a silent wonder. While we are very aware of our heart beating and the breaths we take, we are much less aware of our immune system that protects us from thousands of potentially deadly attacks every day. In this chapter we will discuss the immune system we each possess that is w ...
(Delayed or Cell-Mediated) Hypersensitivity
(Delayed or Cell-Mediated) Hypersensitivity

... • Type I (immediate) • Type II (cytotoxic) • Type III (immune complex–mediated) • Type IV (delayed or cell-mediated) © 2014 Pearson Education, Inc. ...
What are hypersensitivities?
What are hypersensitivities?

... Symptoms: localized or systemic Onset can be: Early, Late or Chronic ...
Non-Specific Defense
Non-Specific Defense

... • Macrophages – phagocytize foreign substances and help activate T cells • Dendritic cells – spiny-looking cells with functions similar to macrophages • Reticular cells – fibroblastlike cells that produce a stroma, or network, that supports other cell types in lymphoid ...
Helicobacter pylori
Helicobacter pylori

... transfer of needed molecules, but at the same time needs to prevent antigens from entering the body. This idea may tell us that the host response to local infection in the gastrointestinal tract must be strong in order to prevent chronic illness. However if this strong response is miss directed it c ...
Cancer Immunotherapy-Maria
Cancer Immunotherapy-Maria

... breast cancers, lymphomas). The only monoclonal so far that seems to be effective against solid tumors. Alemtuzumab (MabCampath®). Binds to CD52, a molecule found on white blood cells. Has produced remission of chronic lymphocytic leukemia. Lym-1 (Oncolym®). Binds to the HLA-DR-encoded histocompatib ...
Adaptive defenses.1
Adaptive defenses.1

... histocompatibility complex (MHC) and are unique to an individual  Each MHC molecule has a deep groove that binds and “displays” a peptide, which is a normal cellular product of protein recycling  In infected cells, MHC proteins bind to fragments of foreign antigens, which play a crucial role in mo ...
The biochemistry and genetics of autoimmune disease
The biochemistry and genetics of autoimmune disease

...  Contact dermatitis, T1D, RA, Multiple sclerosis ...
Platelets: killers of parasites or patients?
Platelets: killers of parasites or patients?

... DNA damage response.2,3 Because the DNA damage response protects the genome from accumulating deleterious mutations, downregulation is associated with an increased risk of clonal development. A viral infection may ...
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Document

... Abs can be fragmented to study properties of different regions protease yields: Fc (crystalizable) region -- “Fc Receptors” Fab (antigen binding) region ...
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Document

... – This fluid and any plasma proteins that escape from the blood stream are carried back to the blood. – As the fluid pressure in the tissue spaces increases, little flaps in the lymphatic capillaries are forced open, the excess fluid enters the lymphatic capillaries and is returned into the circulat ...
Specific Defenses (Immunity)
Specific Defenses (Immunity)

... ◦ B cells attack pathogens by differentiating into plasma cells that secrete antibodies (immunoglobulins) ◦ Body fluids attack and destroy specific antigens or antigen-bearing particles through antibody-mediated immunity also called humoral immune response. ...
Ch20,21 Lymphatic
Ch20,21 Lymphatic

... self-tolerance ...
PPT - Med Study Group
PPT - Med Study Group

CHAPTER 16: LYMPHATIC SYSTEM, NONSPECIFIC RESISTANCE
CHAPTER 16: LYMPHATIC SYSTEM, NONSPECIFIC RESISTANCE

... Infection is caused by the presence and multiplication of pathogens. Pathogens are viruses and microorganisms (bacteria, fungi, protozoans, parasites) that cause disease. The body is equipped with two types of defense mechanisms to fight infection: ...
INNATE (NON-SPECIFIC) IMMUNITY
INNATE (NON-SPECIFIC) IMMUNITY

... phagocytes, NK cell eosinophils, K cells ...
The promise of nucleic acid vaccines
The promise of nucleic acid vaccines

... dendritic cells (DC). The crucial role of bone marrowderived DC has been established primarily by using BMreconstituted chimeras.4–6 The central role of DC is not unique to nucleic acid vaccines. For example, in the case of recombinant poxviral immunogens, the strongest immune response is elicited b ...
A Doctor`s Guide to a Healthy Immune System
A Doctor`s Guide to a Healthy Immune System

... During antibody responses, B cells become activated and secrete antibodies, which are proteins known as immunoglobulins. These antibodies circulate in the bloodstream and other body fluids, where they bind specifically to the foreign antigens that stimulated their production. This binding process ca ...
Malaria in Pregnancy & Anaemia in Pregnancy
Malaria in Pregnancy & Anaemia in Pregnancy

... instead of reacting only against foreign antigens, could focus its attack on SELF ANTIGENS ...
The Tangled NETs of the Immune System - Max-Planck
The Tangled NETs of the Immune System - Max-Planck

... germs – albeit with far less gusto than the neutrophil granulocytes that fulfill this task a hundred times more effectively and that the bone marrow produces daily by the millions. Of all white blood cells, 70 percent are neutrophils. And adult humans are fortunate enough to carry a good half pound ...
MS Word  - VCU Secrets of the Sequence
MS Word - VCU Secrets of the Sequence

... barrier to xenotransplantation - rejection. a. Modify the donor (pig) through genetic engineering in order to change the pigs’ antigens to produce less of an immune response in the recipient. b. Modify the recipient (human) to create increased tolerance to pig organs. Note: A trial test teacher comm ...
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Immune system



The immune system is a system of many biological structures and processes within an organism that protects against disease. To function properly, an immune system must detect a wide variety of agents, known as pathogens, from viruses to parasitic worms, and distinguish them from the organism's own healthy tissue. In many species, the immune system can be classified into subsystems, such as the innate immune system versus the adaptive immune system, or humoral immunity versus cell-mediated immunity.Pathogens can rapidly evolve and adapt, and thereby avoid detection and neutralization by the immune system; however, multiple defense mechanisms have also evolved to recognize and neutralize pathogens. Even simple unicellular organisms such as bacteria possess a rudimentary immune system, in the form of enzymes that protect against bacteriophage infections. Other basic immune mechanisms evolved in ancient eukaryotes and remain in their modern descendants, such as plants and insects. These mechanisms include phagocytosis, antimicrobial peptides called defensins, and the complement system. Jawed vertebrates, including humans, have even more sophisticated defense mechanisms, including the ability to adapt over time to recognize specific pathogens more efficiently. Adaptive (or acquired) immunity creates immunological memory after an initial response to a specific pathogen, leading to an enhanced response to subsequent encounters with that same pathogen. This process of acquired immunity is the basis of vaccination.Disorders of the immune system can result in autoimmune diseases, inflammatory diseases and cancer.Immunodeficiency occurs when the immune system is less active than normal, resulting in recurring and life-threatening infections. In humans, immunodeficiency can either be the result of a genetic disease such as severe combined immunodeficiency, acquired conditions such as HIV/AIDS, or the use of immunosuppressive medication. In contrast, autoimmunity results from a hyperactive immune system attacking normal tissues as if they were foreign organisms. Common autoimmune diseases include Hashimoto's thyroiditis, rheumatoid arthritis, diabetes mellitus type 1, and systemic lupus erythematosus. Immunology covers the study of all aspects of the immune system.
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