MASPs also form complexes with ficolins, which are similar to MBL functionally and structurally with the exception that ficolins recognize their targets through fibrinogen-like domains, unlike MBL.
As MASP tamén forman complexos coas ficolinas, que son similares á MBL funcional e estruturalmente coa excepción de que as ficolinas recoñecen as súas dianas por medio de dominios de tipo fibrinóxeno, a diferenza da MBL.