Changes

===T-Cell Independent Response===

===T-Cell Independent Response===

[[Image:T Cell Independent Diagram.jpg|right|thumb|200px|Diagram of the T Cell Independent Repsonse - Copyright nabrown RVC]]

[[Image:T Cell Independent Diagram.jpg|right|thumb|200px|Diagram of the T Cell Independent Repsonse - Copyright nabrown RVC]]

B cells are activated in this instance by '''non-protinaceous antigens''' such as lipopolysaccharides which act as mitogens for the B cells by stimulating cell division.

*Activation of B cells by '''non-protinaceous antigens'''

These antigens only stimulate '''primary''' immune responses (production of [[Immunoglobulin M|IgM]]) and do not produce memory cells. Initial and subsequent exposure to an antigen stimulates an identical response from the B cell.

**E.g. Activation by lipopolysaccharides only lead to [[Immunoglobulin M|IgM]] production

**Act as mitogens for the B cells by stimulating cell division

*Antigens only stimulate '''primary''' immune responses (production of [[Immunoglobulin M|IgM]])

*Do '''not''' stimulate memory cells

*There is no diference between the antibody response of the first exposure compared to sunsequent eposures of antigen

===T-Cell Dependent Response===

===T-Cell Dependent Response===