**The Role of Neutrophils in Rheumatoid Arthritis – Experiments** *In Vitro***: A Change of Conception?**

Michal Gajewski1, Przemyslaw Rzodkiewicz1,2 and Slawomir Maslinski1,2 *1Department of Biochemistry, Institute of Rheumatology, Warsaw, 2Department of General and Experimental Pathology, Warsaw Medical University, Warsaw, Poland* 
