Effect of time on growth pattern of clonogenic (CFU-GM) and early progenitors (LTC-IC). Patients have been grouped on the basis of treatment (IS or BMT) and time elapsed from. CFU-GM (GM) and LTC-IC (LTC) numbers are expressed as percentage of expected growth; 100% means median laboratory standards (CFU-GM = 58/10⁵ MNC; LTC-IC = 34/10⁶MNC). y = years from treatment. (▴) IS; (▪) BMT.