TASK DEFINITION: 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.
PROBLEM: Question: A 71-year-old man presented with severe pancytopenia without any immature cells and with a medullar study suggestive of severe aplastic anemia. What would be the fundamental therapeutic approach?
Options: <0> Treatment with methylprednisolone at a dose of 1 g / Kg / day for 5 days. <1> Study of siblings and if any is HLA compatible, allogeneic transplant of hemopoietic progenitors. <2> Immunosuppressive therapy with cyclosporine and antitimocitic immunoglobulin. <3> Hemotherapeutic support. <4> Chemotherapy and if autologous transplant response of hemopoietic progenitors.

SOLUTION: medicine

PROBLEM: Question: In the oxaciclohexane-type conformer of sugar -D - (+) - glucopyranose:
Options: <0> One of the OH- groups is axial, but the remaining substituents are equatorial. <1> The CH2OH group is axial but the remaining groups are equatorial. <2> All groups are axial. <3> All groups are equatorial. <4> The CH2OH group is equatorial but the remaining groups are axial.

SOLUTION: chemistry

PROBLEM: Question: In comparison with the primary humoral responses, the secondary ones:
Options: <0> They are based primarily on IgM. <1> They are faster and more durable. <2> They generate antibodies of low affinity for the antigen. <3> They present a low level of hypermutation. <4> They generate much lower amount of antibodies.

SOLUTION:
biology