Similarly, exosomes of TXL2 ALL cells contained no detectable Galectin-3, and low levels of a related Galectin, Galectin-1, whereas OP9 stromal exosomes contained both Galectin-1 and Galectin-3-binding protein, Gal3BP (Figure 2B). The gene discussed is LGALS3; the disease is acute lymphoblastic leukemia.