I have to write a paper on immunity can somebody help me out

I have to write a paper on nutrition can somebody help me out 

I need some help getting information for the below points they have to do with immunity if that helps

Protection against autoimmunity

Relationship of epitope to an antigen

Nature of a primary to a secondary immune response

Role of vaccination in stimulating immunity

Can somebody please help me I am stuck and in need of assistance

The Assignment (3–5 pages)

Explain at least two ways cognition, affect, and behavior impact attitude formation. Explain at least three functions attitudes serve. Support your response using both formal theoretical and empirical literature addressing attitude function.

Explain the extent to which you believe attitudes can have an impact on behavior.

Be specific and use the Learning Resources and the current literature to support your response