Cellular immunity

CELLULAR IMMUNITY
Involves two types of lymphocytes: T lymphocytes, B lymphocytes and non-T.
It is effective for the destruction of:
-Foreign cells
Own tumor-cell
Virus-infected cells
-Infected cells by an intracellular growth
T LYMPHOCYTES
T4 LYMPHOCYTES
LYMPHOCYTES T _H: The role is to stimulate other T cells and B lymphocytes
T LYMPHOCYTES _D: cause the increase in the number and activity of macrophages
T8 LYMPHOCYTES
T CELL _C: result in the destruction of target cells
_ST LYMPHOCYTES: avoid excessive or inappropriate immune response. Lymphocytes deactivated when control has been achieved antigenic agents.
-A phagocyte capture a foreign element and after digestion. makes it an antigen presenting cell
"The complex binds to T cell antigen receptor leading to the activation of this
"When T _Hcells are activated. It also activates T lymphocytes and T _{C S}
NO-B-CELL NON-T
perform a specific response
There are two types:
.- K cells attack cells coated with antibodies
.- NK cells act similarly to the previous


TYPES OF IMMUNITY
INNATE IMMUNITY nonspecific mechanisms .-
.- Acquired Immune defense mechanisms of antigen exposure
ACQUISITION OF STATE IMMUNITY
ACTIVE IMMUNITY .- acquired after having produced an immune response in which the individual acquires immunological memory.
ACTIVE IMMUNITY NATURAL .- is acquired through an immune response unprovoked.
ARTIFICIAL ACTIVE IMMUNITY .- induced by vaccines.
PASSIVE IMMUNITY .- when antibodies that confer immunity are produced by another body. Its action is short and does not create lasting immunological memory
PASSIVE IMMUNITY NATURAL .- · antibodies naturally pass mother to child Dela
PASSIVE IMMUNITY · ARTIFICIAL .- enter the body by other antibodies formed
PATHOLOGIES
IMMUNE TOLERANCE .- specific state of non-response to an antigen.
AUTOIMMUNITY .- immune system does not recognize its own cells and molecules produced an immune response against himself
HYPERSENSITIVITY .- is an exaggerated response against pathogens
Allergy is a response to a normally harmless substance. Substances that cause allergies are called allergens and are very varied. Allergic responses are varied
.- IMMUNODEFICIENCIES absence or failure of the normal function of one or more elements of the immune system
TUMOR IMMUNITY .- tumor cells to be recognized as foreign trigger the immune response
TRANSPLANT REJECTION .- donor antigens can cause

immune rejection response in the receiver