Spleen is

Antibodies are produced by

What does the term 'memory' of the Immune system mean ?

provides passive immunity

Select the lymphoid organs from the given choices

$I$. Lymph node $II$. Thymus gland

$III$. Red bone marrow $IV$. liver

$V$. Spleen $VI$. Osteocytes

$VII$. Peyer's patches

The correct option with correct choices is

Assertion : Organ transplantation patients are given immunosuppressive drugs.

Reason : Transplanted tissue has antigens which stimulate the specific immune response of the recipient.