Allergies could be because of

1.    Protected environment provided in early life

2.    Modern day lifestyle

3.   More sensitivity to the environment

4.   All of these

The primary lymphoid organs are

What is the main lymphoid organ where all blood cells including lymphocytes are produced?

1.    Spleen

2.    Thymus

3.   Lymph nodes

4.   Bone marrow

The cause of autoimmunity can be

When a quick immune response is required, we administer which kind of immunization?

1.    Active

2.    Passive

3.   Both depending on the pathogen

4.   Generally active sometimes passive

The microenvironment  for the maturation and development of T lymphocytes is created by

1.    Bone marrow

2.    Thymus

3.   Both A and B

4.   Spleen

Which of the following is not a lymphoid organ?

1.    Appendix

2.    Thyroid

3.   Peyer's patches

4.   Tonsils

RDT has not allowed producing an antigenic polypeptide of the pathogen in

1.    Bacteria

2..    Yeast

3.    Virus 

4.   Both 1 and 2

The formation of effector lymphocytes will occur in

1.    Bone marrow

2.    Thymus

3.   Appendix

4.   Thyroid