Cluster 884: kg weigh cd cells minimum stem patients cell weighing apheresis Cluster 1957: eso ny expression ihc immunohistochemistry tumor positive rt immunotherapeutics pcr Cluster 1985: marrow bone aspirate biopsy peripheral blood patients days performed prior Cluster 2196: flow cytometry cd expression marrow immunohistochemistry cells bone peripheral blood Cluster 2346: cd cells expression cell positive prior cll tumor diagnosis car