Microbiology 9th Edition by Laura Black, Jacquelyn Black

تمرين 33

Primary immunodeficiency diseases are caused by genetic de fects in embryological development of lymphoid tissue resulting in a lack of T cells or B cells, or defective T and B cells. Which of the following diseases is a primary immunodeficiency disease?
(a) DiGeorge syndrome
(b) Severe combined immunodeficiency disease (SCID)
(c) Agammaglobulinemia
(d) All of the above
(e) None of the above