instruction:
In this task, you are given a question and answer options for that question. Using this information, you have to classify each text into different topics: medicine, nursery, psychology, chemistry, pharmacology, biology.
question:
Question: It has a recessive inheritance linked to the X chromosome the: 
 Options:  <0> Acatalasemia <1> Hemophilia A. <2> Rett syndrome. <3> Cystic fibrosis, <4> Hypophosphatemia
answer:
biology


question:
Question: Controls the passage of substances to the central nervous system: 
 Options:  <0> Meninges. <1> Choroid plexus. <2> Hemato-encephalic barrier. <3> White substance <4> Schwann cells and oligodendrocytes.
answer:
biology


question:
Question: In which of the following clinical contexts is NOT the use of intravenous gammaglobulins recommended? 
 Options:  <0> Substitute treatment in humoral immunodeficiencies (defect in the formation of antibodies). <1> Prevention of monoclonal gammopathy of uncertain significance (MGUS). <2> Treatment of Kawasaki syndrome. <3> Management of inflammatory / autoimmune neurological pathologies (Sd. Guillain-Barré, multiple sclerosis). <4> Therapeutic management of immune thrombocyanic purpura (ITP).
answer:

medicine