PGG-glucan
Poly---D-glucopyranosyl---D-glucopyranose glucan is an anti-infective agent and a form or type of beta-glucan.
Betafectin is a PGG-glucan, a novel β- branched β- glucan, purified from the cell walls of Saccharomyces cerevisiae.
It is a macrophage-specific immunomodulator.