Which are useful for determining progression for patients with the myelodysplastic syndromes?

The picture below is from a 15-year-old boy that has been complaining of a sore throat for the last two weeks.  He has a WBC count of 25,000/ul and his heterophile antibody test is positive.  Based on the aforementioned data, what is the most probable diagnosis?   

Which type of lymphoid hyperplasia is exclusively associated with Toxoplasma gondii infections? 

The Esterases (nonspecific and specific)  are used to differentiate between: 

The picture below is from a skin biopsy specimen from a patient with an enlarged cervical lymph node.  The peripheral blood smear appears normal.  The cell in the box is the reference for the rest of the cells in the field.  Which disorder is this patient most likely suffering from?   

The specimen of choice when working up a lymphoma is: 

What pool of cells is the first to arrive when granulocytes are needed in the tissues? Those: 

Cytogenetics is performed on the bone marrow of a patient and 50 cells are examined. The patient’s karyotype is reported as 47, XX, +8. This indicates that: 

Nitrogen mustard is a chemotherapeutic agent that works by: 

A chemotherapy patient’s white blood cell (WBC) count is 1.3 × 109 /L. There are 2% segmented neutrophils, 38% lymphocytes, and 60% monocytes. What is the correct interpretation of the relative differential?