Human Health and Diseases — BIOLOGY STD 12 Science — Question
Maharashtra BoardEnglish MediumSTD 12 ScienceBIOLOGYHuman Health and Diseases3 Marks
Question
What are the unique features of acquired immunity?
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Answer
Following are the unique features of acquired immunity:
Specificity : Production of specific antibody or T-lymphocyte against a particular antigen/ pathogen is called specificity.
Diversity : Ability to recognize vast variety of diverse pathogens or foreign molecules by immunity is called diversity.
Discrimination between self and non¬self : Acquired immunity can differentiate between own body cells (self) and foreign (non-self) molecules.
Memory : The first immune response upon encounter of a specific foreign agent and its elimination is retained as a memory. This results in quicker and stronger immune response when the same pathogen is encountered again.
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