Anti-ST2 antibodies are readily available from several suppliers. ST2 is an alias name for Interleukin 1 receptor-like 1, encoded by the gene IL1RL1 in humans. Other synonyms include FIT-1 and IL33R. The canonical protein is 556 amino acids in length with a molecular weight of 63.4 kDa. Two isoforms are reported. Consult the antibody supplier page for essential details, including target immunogenicity and tested applications.