Table I.

NPM1 protein expression in xenograft tumor tissues.

Tumors	NPM1, %
NIR-CNE-2	56.3±5.2a
NIR-CNE-2R	36.0±4.2b
IR-CNE-2	35.3±5.5c
IR-CNE-2R	36.3±4.7

^aP<0.01 vs. NIR-CNE2R and IR-CNE-2

^bP>0.05 vs. IR-CNE-2R

^cP>0.05 vs. IR-CNE-2R. NPM1, nucleophosmin; IR, irradiated; NIR, non-irradiated.