TNFSF13B and acute lymphoblastic leukemia: In the evaluation of total cell number after incubation with Jurkat-, TALL1-, or Loucy-COND, we found that hTECs displayed morphological changes and reduced growth, particularly when cultured with Jurkat and TALL1 COND medium, as compared to cells grown in T-ALL control (CTRL) medium (Figure 3A).