This week’s episode will examine data on the impact of the FDG uptake level on predicting subsequent high-grade histological transformation in follicular lymphoma, explore clonal tracking in gene therapy patients as a method for understanding human hematopoiesis, and review a study on the recognition of platelet factor 4-von Willebrand factor complexes by heparin-induced thrombocytopenia antibodies as a basis for the pathogenesis of HIT.