Identify the cell that induces the process of $cytolysis$.

In which of the following organs do immature lymphocytes differentiate into antigen-sensitive lymphocytes?

Which cell of the immune system causes pore formation at the surface of the plasma membrane of target cells?

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:

Acquired immunity is mediated by which of the following?

Which cells are responsible for producing antibodies?