A novel biological indicator system to detect the effectiveness of a sterilization treatment and methods for assessing the viability of and/or changes in bacterial spores exposed to a sterilization or disinfection method by multiangle light scattering thereby detecting a change in the spores as indicators...http://www.google.com/patents/US6942989?utm_source=gb-gplus-sharePatent US6942989 - Methods, compositions and kits for biological indicator of sterilization
