‘Pathogens' are

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:

The function of vaccine is the production and storage of

What is the basic principle of vaccination ? How do vaccines prevent microbial infections ? Name the organism from which hepatitis $B$ Vaccine is produced.

Which of the following are Autoimmune disorders?

$A$. Myasthenia gravis  $B$. Rheumatoid arthritis

$C$. Gout  $D$. Muscular dystrophy

$E$. Systemic Lupus Erythematosus ($SLE$)

Choose the most appropriate answer from the options given below:

A malfunction of the lymph nodes would most likely interfere with the