The images above show mice at four and five weeks, respectively, after they had acute T-cell lymphoma and leukemia (ATLL) cells, containing the firefly gene, injected into their abdomens. The color spread shows the extent of the cancer's spread through the animal's body.

The images below show mice which received similar injections but which had been treated with the anticancer drug PS-341 (on the left), and with zoledronic acid (on the right).