The bone marrow fibrosis observed in primary myelofibrosis is due to:

Which is an expected finding in polycythemia vera?

When the chromogenic assay for antithrombin is performed, which is true?

A 27-year-old woman arrives at the emergency department with acute bleeding and is found to have a white count of 25.7 × 109L with pancytopenia: hematocrit 27%, platelet count 35 × 109/L, and absolute neutrophil count 0.8 × 109/L. She has a combination of 97% blasts and abnormal promyelocytes in her peripheral blood; some of these cells contain Auer rods. What form of leukemia does she most likely have?

In which substance is a patient with the following coagulation test results most likely deficient? Test Test Result Reference Range Prothrombin time (PT) 18 seconds 11–15 seconds Partial thromboplastin time (PTT) 31 seconds 25–37 seconds Thrombin time (TT) 16 seconds 15–21 seconds

Wiskott-Aldrich syndrome is characterized by

A break in two chromosomes with each piece uniting with different chromosomes is called:

Which is typical in the peripheral blood in patients with myelodysplastic syndrome?

The presence of schistocytes in the peripheral blood indicates which of the following processes?

Cell division to produce daughter cells identical to the parent cell is an example of: