This shows that [Bi-213]anti-CD20 activates caspases in radio-/chemosensitive aswell as with radio-/chemoresistant DoHH-2 NHL cells, indicating that defective activation of caspases was reversed in the radio-/chemoresistant DoHH-2 cells. Activation of mitochondria, leading to caspase-9 activation was restored and downregulation of Bcl-xLand XIAP, death-inhibiting proteins, was discovered after [Bi-213]anti-CD20 treatment in radio-/chemoresistant and radio-/chemosensitive NHL cells. […]