<qa>  What is the last day of apheresis?- Patients receive rituximab IV over 4-8 hours on days 1 and 5. Patients also receive cyclophosphamide IV over 2 hours on day 8 and filgrastim G-CSF subcutaneously SC beginning on day 9 and continuing until the last day of apheresis. Stem cells are collected over 1-3 days. 