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The three complement pathways with associated proteins. *Multiple C3 and/or C4 isoforms in some teleost and cartilaginous fish species. **Absence of mannose-binding lectin (MBL), ficolin, C1qA, and C1qC from genomes of any cartilaginous fish studied to date ***MASP2 transcript with no serine protease domain in hammerhead shark genome; MASP2 missing from elephant shark, little skate, and catshark genomes (102–109).
