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being resistant to or protected from a disease
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terms list

being resistant to or protected from a disease
Antigen (immunogen)
Any substance capable of stimulating the production of an antibody
Antibody (immunoglobulin)
A chemical protein developed by the body in response to an antigen
interferes with pathogens in secretions
Acts as an antigen receptor
Plays a role in allergic reactions
First antibody produced during an infection
Only one that crosses the blood brain barrier
a non parasitic antigen capable of stimulating a hypersensitivity reaction
Complement proteins
circulating proteins that are activated by antibodies
lack of immune response to an antigen
Body recognizes its own cells as foreign cells & produce antibodies against them
Physical barriers
Skin acts as outside barrier to foreign invaders / bodily secretions trap and neutralize / bodily mechanisms work to expel
Considered a nonspecific immune response / complex set of events to bring immune cells into a damaged area and set the stage for tissue repair
Ingestion and digestion of bacteria
Cell mediated immunity
A delayed response sometimes called "delayed hypersensitivity"
Humoral Immunity
An immediate specific response against acute bacterial & viral infections
Tonsils / Adenoids
Collections of lymphoid tissue that help the body fight infection
Bone Marrow
Where WBC's are produced
Lymph Nodes
Where WBC's wait for foreign substances to destroy
Where T Cells differentiate into specific types of functioning cells
GI Tract
stomach and small intestines contain Peyers patches where highest % of WBC are found
Respiratory Tract
contains tonsils and adenoids (lymph Nodules)
Contains plasma cells that produce antibodies & macrophages that phagocytize foreign matter
1 to 3 % destroy parasites ; play a role in allergic reactions
55 to 70 % perform phagocytosis
0.5 to 1% release histamine during inflammation
1 to 8% engulfs and digests the invading bacteria
B cells / B lymphocytes
make antibodies against antigens and eventually develop into memory B cells
T Cells / T lymphocytes
Play a central role in controlling the acquired immune response
"Big Eaters" role is to engulf & digest cellular debris & pathogens
T Cells
Identified by surface protein receptors called clusters of differentiation
Helper T cells (CD4)
Recognize antigens and start the immune response. These are primary cells attacked by HIV
Killer T cells (CDS)
Chemically destroy foreign cells that have been marked by antibodies
Suppressor T Cells
stop the immune response once the antigen has been destroyed
B cells
Change into plasma cells that produce antibodies
Memory Cells
Derived from T or B cells they quickly recognize a foreign antigen to which the body has been previously exposed
Natural Killer Cells
Large lymphocytes that work with interferon to kill virus infected cells and they also kill some cancer cells
Passive Immunity
pass antibodies from another organism, animal, or human
Active Immunity
Involves the production of ones own antibodies
ingestants / inhalants / contactants / injectants
Allergic Rhinitis
sneezing / nasal congestion with watery nasal drainage / red itchy eyes
Contact Dermatitis
itching / swelling / redness of the skin with presence of a skin rash or hives
Food Allergy
N/V / diarrhea / skin Rash / wheezing
severe swelling of the skin and mucous membranes requiring immediate treatment
Most sever life threatening allergic reactions
Stage 1 (seroconversion)
once antibodies are present in the blood the seroconversion has occured. This stage can last for years without converting to AIDS.
Stage 2
ARC is a group of symptoms like weight loss, thrush, fever, night sweats, prolonged diarrhea and fatigue that occur after stage 1 but before opportunistic infections
Stage 3 Aids
Present when the T cell count is below 200 cells/mm3 and the patient has signs of opportunistic infections
80% of patients this is the first OI to develop / herpes simplex / TB/ hepatitis / candidiasis
Kaposi Sarcoma
33% of AIDS patients develop this malignant neoplasm which is cancer of the connective tissue which appears as bilateral / flat / pink lesions that turn dark violet

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