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Regulations.gov document: Exhibit 4 - Semelka RC, Ramalho M. Selecting chelators for heavy metals: Integrating coordination chemistry with in vivo decorporation (An intra-individual proof-of-concept study). J Appl Biotechnol Bioeng. 2026;13(4):117-121. doi:10.15406/jabb.2026.13.00425. Exhibit 2. — retained record — High Signal