Answer:
1: Antibodies
2. Memory cells
Explanation:
Cholera vaccine contains weakened pathogen of cholera that serves as antigen and initiates the immune response. Identification of cholera antigen is followed by the formation of antibodies specific for the antigen.
Production of antibodies occurs through clonal propagation of B cells. Multiplication of B cells produce antibodies and memory cells. Antibodies kill the antigens while memory cells are long-lived and serve to elicit quicker and stronger immune response upon encounter with same antigen ever again.