Hammel, Philippe, and Norbert Lange. “RB217, RB218 and RB219 Antibodies Recognize 
Protoporphyrin IX by ELISA”. [TEST] Antibody Reports 4, no. 2 (August 18, 2021): e536. Accessed July 3, 2024. https://oap.unige.ch/journals_test/abrep/article/view/536.