Adaptive Immunity

Q. Which of the following immunoglobulins does constitute the largest percentage in human milk ?

1. IgG
2. IgD
3. IgM
4. IgA

Q. Which of the following is true for acquired immunity?

1. Our immune system remembers each and every immunological encounter in our body.
2. Acquired immunity is pathogen-specific.
3. Can discriminate self and non-self cells
4. All of the above