Wiktionary
acemannan
n. A mucopolysaccharide found in aloe vera leaf, with immunostimulant, antiviral, antineoplastic and gastrointestinal properties.
Wikipedia
Acemannan
Acemannan is a D-isomer mucopolysaccharide in aloe vera leaves. This compound has been known to have immunostimulant, antiviral, antineoplastic and gastrointestinal properties.