If a person is vaccinated against a disease sometime in the past, which of the following is currently in your body?
A. The disease organism itself and antigens for the disease organism
B. A very high level of antibodies against the disease antigens
C. Memory B lymphocytes for the antigen of this disease organism
D. All of the above
Answer:D
If a person is vaccinated against a disease sometime in the past, which of the following is currently in your body?
A. The disease organism itself and antigens for the disease organism B. A very high level of antibodies against the disease antigens C. Memory B lymphocytes for the antigen of this disease organism D. All of the above