Microbiology 9th Edition by Laura Black, Jacquelyn Black

تمرين 33

Which of the following is true about adaptive immunity?
(a) It is generally the first line of defense against invading agents.
(b) It is a specific defense against foreign bodies or an tigens (bacteria and viruses). The antigen activates lymphocytes, which in turn produce antibodies capable of fighting against the specific antigen.
(c) It is a general defense that acts against any type of in vading agent.
(d) The antibody and cellular responses are more effective against succeeding invasions by the same pathogen than against initial invasions.
(e) b and d.