VisEn Medical Inc., a leader in fluorescence in vivo imaging from research through medicine, announced today the commercial launch of its new OsteoSense® 800 imaging agent for targeting areas of bone turnover and microcalcification in vivo. The new 800 nm OsteoSense agent complements VisEn's OsteoSense 680 and 750 products, and is expected to further expand the utilization of this agent family in enabling in vivo detection, measurement and monitoring of skeletal changes in a wide range of disease states, including arthritis, osteoporosis, and cancer metastasis. In addition, VisEn has launched a new near infrared label, VivoTag 800® to add an additional wavelength channel to its current line of VivoTag fluorochromes which are used to label specific ligands of interest in a wide variety of in vivo and in vitro imaging applications. Both of the new 800 nm agents are well suited for imaging quantification on the VisEn FMT 2500(TM) LX quantitative tomography imaging system, which also has expanded wavelength capabilities to enable simultaneous imaging of up to four agents and biologies of interest in vivo.