Assistant Professor Dr. Rana Ibrahim Mahmoud from the Department of Biomedical Engineering, College of Engineering, University of Al-Nahrain, participated in the 2nd Scientific Conference of Al-Bayan, held at Al-Bayan University from April 24-25, 2024. She participated with a research paper entitled "(Role of Several Cytokines and Vitamin D Deficiency in The Progression of Rheumatoid Arthritis in samples of Iraqi Patients)", which was co-authored with Assoc. Prof. Dr. Rawaa Al-Jalabi, Assistant Lecturer Aya Mohammed Maki, and Dania Omar from the College of Biotechnology / University of Al-Nahrain, and Dr. Ru'aa Sadiq Jaafar from Yarmouk Teaching Hospital. The aim of the conference was to bring researchers and scientists together to exchange information and scientific expertise through the discussion of their various researches.