美国One Lambda  
One Lambda由器官移植领域的杰出研究员Paul Terasaki于1984年成立，One Lambda是移植诊断领域的先驱。One Lambda的诊断测试被移植中心使用用于组织配型，主要是为了确定捐献者和接受者移植前的相容性，并检测是否存在可导致移植排斥反应的抗体。One Lambda由私人持有，拥有约320名员工，总部位于加利福尼亚州，为全球1400多家实验室服务。公司2011年收入1.82亿美元。

One Lambda at a Glance
One Lambda develops and distributes several lines of histocompatibility (HLA) typing tests utilizing both serological and molecular technologies. One Lambda also manufactures a comprehensive line of antibody detection products, laboratory instrumentation, and computer software that are used to simplify and automate testing procedures and final test evaluations.

Incorporated January 27, 1984

Received first product order April 1, 1984

Based in Canoga Park, California, USA

260 employees servicing more than 1,400 laboratories worldwide

A Brief History
In the early days of histocompatibility, the United States government offered grants that provided research laboratories with typing reagents for HLA studies. UCLA professor Paul Terasaki utilized this funding to develop a tissue typing tray that consistently and accurately assigned HLA antigens. Terasaki trays quickly became an important tool in the HLA laboratory, and UCLA began making them available through the government grants. The distribution of this standardized tissue typing tray helped advance the early identification of HLA antigens and ensured that the relationship between HLA and transplantation would be further examined.

Research continued to reveal additional information, but advancement was challenged when the government stopped funding HLA studies in 1972. Rather than discontinue efforts, laboratories agreed to purchase the trays directly from UCLA, the only supplier of tissue typing trays in the world.