Changes

**Organisms can be killed using radiation or chemicals so that they still possess the antigens to stimulate an immune response, but the organisms are unable to replicate inside the host

**Organisms can be killed using radiation or chemicals so that they still possess the antigens to stimulate an immune response, but the organisms are unable to replicate inside the host

**Toxins are inactivated to produce a toxoid which will still have the antigens needed to produce an immune response but will not be harmful to the host

**Toxins are inactivated to produce a toxoid which will still have the antigens needed to produce an immune response but will not be harmful to the host

**Needs two doses

**Needs two doses (for an explanation on the T cell responses click [[B cell differentiation - WikiBlood#T-Cell Dependent and Independent Responses|here]])

===Subunit Vaccine (part of the organism)===

===Subunit Vaccine (part of the organism)===