Cellular Technology Limited (CTL) is a privately held biotechnology company headquartered in Shaker Heights, a suburb of Cleveland, OH, with locations and distributors worldwide. CTL presently has around 150 full time employees.
A spinoff of Case Western Reserve University, the company was founded by Prof. Paul V. Lehmann and scientists working with him on immune monitoring with the intent to help fellow scientists in their respective immune monitoring efforts. CTL maintains an active immune-monitoring-focused research program presently employing 19 M.D./Ph.D.- level scientists to extend the limits of immune monitoring, and to share the expertise gained with the research community.
CTL is the only company that, for over 25 years now, has been focusing on advancing ALL ASPECTS of immune monitoring by ELISPOT/FluoroSpot (collectively called ImmunoSpot® )