Stellar Biotechnologies, Inc. is a biotechnology company. Stellar is engaged in the research, development, manufacture and commercialization of Keyhole Limpet Hemocyanin (KLH), and related products and technologies. KLH is a high molecular weight (HMW), immune-stimulating protein used in immunological applications, both as an active pharmaceutical ingredient (API) in certain immune therapies (such as for the treatment of cancer, infectious diseases and immune disorders) and as a finished product for testing immune status in patients and research settings. The Company products include HMW and subunit KLH protein in various grades, formulations and configurations, as well as certain preclinical in vitro diagnostic kits. Products offered include: Stellar KLH Protein for Vaccine Conjugation; Stellar KLH Protein for T-Cell Dependent Antibody Response (TDAR) and Immune Function Testing, and Custom KLH Formulations, Conjugations and Fill Finishes.