1. Hemoral Response: production of antibodies. ex. Free viruses, toxins, free bacteria
2. Cell mediated response: cytotoxic T-cells
-Depends on direct action of cells (lymphocytes) to fight against invaders.
- ex. lg. parasites, own infected host cells fungi, etc.
B-Cells T-Cells
*Immune cells that begin life in bone *Type of lymphocyte
marrow as stem cells
*Humoral Response *Cell Mediated Response
*Mature in Bone *Mature in Thymus
*Antigen receptors on plasma membrane *Angitgen receptors on plasma memebrane
which are actual antibodies which are NOT antibodies
*Produces effector cells called plasma cells *Produces effector cells called 1.cytotoxic T-cells
2. Helper T-cells
*Activated by free antigens *Not activated by free antigens
Antibodies
1. Neutralization - prevent binding w/other cells and coats bacterial toxins, prevents reproduction
2. Agglutination of particular antigens
3. Precipitation of soluble antigens
4. Activation of complement --> cell lysis (split)
5. Antibodies - protein that attaches to a specific antigen.
Active Vs. Passive Immunity
*Active: depends on a response from a person's own immunce system. Ex. vaccine, previous infection
*Passive: antibodies transported from one body to another. Ex. Mother-->fetus, Rabies victims
*Vaccines: inactivated toxins, killed microbes, weakened microbes, mutated viruses that cuase your obdy to build a memory response for that antigen
*Body will respond to invader, as if it had had it previously.
