Minimum of 300 words with at least 2 peer review reference in 6th edition APA format.

1. Immunity is necessary to prevent infectious diseases from spreading. Differentiate between passive-acquired and active-acquired immunity.
2. Immunoglobulins are necessary to protect the human physiology from diseases and pathological disorders. Explain the role of IgA, IgG, IgE. IgD, and IgM.