One of our journals has published several articles describing use of a particular cell line X, which belongs to company Y. The authors included employees of company Y. A reader at a university, Dr Z, wished to gain access to cell line X, and requested it from company Y. He was informed by the director of science of company Y that ‘...it is Y’s intention to keep control of the integrity of the X materials as much as possible, thereby taking care of our licensees’ interests.