Fig. (1). Serological changes of rheumatoid factor (RF), cryoglobulins (cryos), BLyS levels and dose changes of daily methylprednisolone (MP) during rituximab (RTX) 650 mg weekly for 8 weeks) infusions and in the subsequent follow-up RF, cryos and BLyS levels are expressed in logarithmic scale on the left side. The scale on the right side of the graphic is related to MP daily dose