Choose the true statements

$I.$ Innate immunity is accomplished by providing different types of barriers

$II.$ Acquired immunity is present from the birth and is inherited from parents

$III.$ Sweat, tears, acid in the stomach and saliva prevent microbial growth

Given below are two statements :

Statement $I:$Autoimmune disorder is a condition where body defense mechanism recognizes its own cells as foreign bodies.

Statement $II:$Rheumatoid arthritis is a condition where body does not attack self cells.

In the light of the above statements, choose the most appropriate answer from the options given below:

Interferons are

Differentiate the following and give examples of each:

$(a)$ Innate and acquired immunity

$(b)$ Active and passive immunity

Mention the importance of Recombinant-DNA technology in terms of Vaccination?