Alhydrogel® 2% Vaccine Adjuvant: Aluminium hydroxide gelAlhydrogel® 2%, referred to as alum, is an aluminium hydroxide wet gel suspension. Alum induces a Th2 response by improving the attraction and uptake of antigen by antigen-presenting cells (APCs). It can also activate innate immunity pathways triggered by pattern recognition receptors (PRRs).Alhydrogel® is sterilized by autoclavation and aseptically filled. InvivoGen only sells products for research useAlhydrogel® is a trademark of Brenntag Biosector.Specificity: Th2 responseWorking concentration: 1:9 - 1:1 (Alhydrogel:antigen)CAS number: 21645-51-2Aluminium content: 9.0 – 11.0 mg/ml Appearance: White gelatinous precipitate