Differentiate the following and give examples of each:
$(a)$ Innate and acquired immunity
$(b)$ Active and passive immunity
$(a)$
Innate immunity | Acquired immunity |
$(1)$ New born is born with all the elements of defense. | $(1)$ Immunity develops after the child birth. |
$(2)$ Various barriers are present to prevent the entry of foreign agents. | $(2)$ Specialized cells like $T$-cells and $B$-cells and antibodies circulate in body fluid. |
$(3)$ Present for whole life of an individual | $(3)$ It can be present or absent whole life of an individual. |
$(2)$
Passive immunity | Active immunity |
$(1)$ Ready-made antibodies are used. | $(1)$ Pathogens or antigens are required in body for its production. |
$(2)$ Side effects are observed. | $(2)$ No side effects. |
$(3)$ Faster immune response observed. | $(3)$ Takes time to develop immune response. |
$(4)$ The effect lasts for only few days. | $(4)$The effect is long lasting. |
What are interferons ? How do interferons check infection of new cells ?
What is Active immunity and Passive immunity ?
An 'antigen' is
If you suspect major deficiency of antibodies in a person, to which of the following would you look for confirmatory evidence ?
Some people who have suffered from a disease may not be affected again during their life time; such immunity is called