All of the following represent characteristic(s) of the adaptive immunesystem EXCEPT:O Populations of specific lymphocytesO Recognition of specific antigens/epitopesOLag time that is associated with illnessAll of the answers apply, no exceptionO Binding of pathogen with toll like receptors (TLRS)O Primary and secondary responses Question 29Which of the following apply to vaccinesRetention of antigenic properties of the pathogenO Induce TH cells to chronically secrete gamma interferonO Can be made for all pathogensLead to the formation of chronic lesionsO All of the answers apply

The three types of immunity system 1. Innate immunity 2. Adaptive or acquired immunity 3. Passive immunity Acquired or adaptive immunity system - activate with the age . Absent in babies. For example vaccine. It also have immunological memory for fight with same antigen again. Lymphocytes (T and B lymphocyte) responsd to antigen. T cells and B cell play major role in adaptive immunity. Adaptive immunity is the second line of defense It take more than 95 hours to act on disease that called lag time which is associated with disease. TLRs activate one by one steps in the inflammatory mechanism and dendritic cell function by activating the signals which is the part of adaptive immunity As the adaptive immunity has immunological memory so it is not able to fight with pathogens at first time (primary response) but it kill the Pathogen second time ( secondary response) Answer - 4th (all the answer apply no exception) Vaccine - mild form of Pathogen inserted in the body by injection. And immunity can fight with it easily and makes the memory when second time the Pathogen attack on the body the immunity kill the Pathogen. Example of adaptive immunity. Vaccine prepared only for the viruses and bacteria pathogen. Vaccine only made for pathogens which attacks to the immunity system every time that triggered the immune system. Adaptive immunity at second response stimulates the TH cells which release gama interferon to stimulate the natural killer cells Conclusion - correct answer is 3rd (made for all the Pathogens)