CytoQuest? CR Unpacking Abvideo provides insights into the expected contents included in the system package. Abnova’s CytoQuest? CR is a non-invasive system for capture, enumeration, isolation and retrieval of circulating rare cells (CRCs), including circulating tumor cells (CTCs), circulating stem cells (CSCs), and circulating fetal cells (CFCs). Please visit Abnova website for more information.