Figure 4. Release of L-lactate dehydrogenase (L-LDH) and vitality of 1321N1 cells upon incubation with 50 µM curcumin.

Tumor cells were cultured and treated as mentioned in Fig. 3. (A) LDH activity was measured in cell supernatants. (B) Cell vitality as assayed by the trypan blue exclusion test. Data represent the mean±S.D. of independent experiments (n = 6).