Three papers which Leon posted in another thread.
They make for very interesting reading.
Perhaps this thread should be sticky? I found them very useful
1. Multiple sclerosis: long-term remission after a high dose of cyclophosphamide
2 High dose cyclophosphamide preferentially targets naïve T (CD45/CD4/RA+) cells in CIDP and MS patients
3 Reduction of Disease Activity and Disability With High-Dose
Cyclophosphamide in Patients With Aggressive Multiple Sclerosis