Head of the Department of Biology (Prof. Dr. Naseer Mirza Hamza) published a paper entitled (Nano-structure of Xerogel / MTX and its effect on liver and kidney tissues and the level of IgG in mice with rheumatoid arthritis) published in the (Journal of nanostructures). The conclusion of the research included the detection of the therapeutic effect of the prepared and diagnosed Xerogel nanocomposite on liver and kidney tissues and the level of rheumatoid factor (RF) concentration in rats caused by a Complete Freund Adjuvant (CFA) bacterial injection, which causes rheumatoid arthritis (RA).