The third is the alternative pathway ... Brenner: There are three pathways of complement activation. Each of those three pathways has a unique enzyme that initiates the complement cascade.

A number of pathogens can initiate the mannan-binding lectin and alternative pathways of complement activation. The classical and alternative pathways of complement activation all tag antigens ...

Conclusions: This is the first study assessing the complete lectin pathway of complement activation in invasive infections. The decreased expression of lectin pathway proteins in neonates may ...