Cell Signaling Technology (CST) | 35,150 followers on LinkedIn. CST is a private, family-owned company, founded by scientists and dedicated to providing high-quality research tools. | Founded by research scientists in 1999, Cell Signaling Technology (CST) is a private, family-owned company that prides itself on operating as a research institute developing quality products for other researchers. Active in the field of applied systems biology research, particularly as it relates to cancer, CST understands the importance of using antibodies. That's why all of our antibodies are painstakingly validated for multiple applications by our Ph.D. level scientists.