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2. The Globin Gene Server hosted by Pennsylvania State University USA andMcMaster University Canada.http://globin.cse.psu.edu/
3. Determination of human hemoglobin derivatives;Attia AM;Hemoglobin,2018
4. Methemoglobin—It's not just blue: A concise review
5. Physiological reactions of nitric oxide and hemoglobin: A radical rethink