Description LifeSpan BioSciences likes the way genes express themselves. The firm helps drug makers develop new product candidates faster by finding proteins and RNA in human tissue samples to identify gene expression associated with disease. It maintains a catalog of some 82,000 antibodies, from which researchers can choose. Its LifeSpan DrugTarget database gives researchers access to immunohistochemsitry reports for hundreds of proteins. Also available are tissue microarrays, an in-house tissue bank, and pathology services. LifeSpan's clients include pharmaceutical companies in Asia, Europe, and North America.