Phosphorylation Status of Thymidine Kinase 1 Following Antiproliferative Drug Treatment Mediates 3′-Deoxy-3′-[18F]-Fluorothymidine Cellular Retention - Sala,R; Quang-De,N; Patel,CBK; Mann,D; Steinke,JHG; Vilar,R; Aboagye,EO (PLOS ONE, 2014)