GAL and neoplasm: With the IC50 as an indicator of anti-tumor activity, the anti-tumor activity of different tanshinone IIA preparations in A2780 and HCT8 cells was as follows: Free TanIIA (2.442, 2.416 μg/mL) > pH-TanIIA-NSVs (3.596, 3.464 μg/mL) ≈ Gal-pH-TanIIA-NSVs (3.532, 3.437 μg/mL) > TanIIA-NSVs (4.540, 4.646 μg/mL) ≈ Gal-TanIIA-NSVs (4.710, 4.480 μg/mL).