Gentiolactone and cytotoxicity of gentiolactone.

<p>A, Structure of gentiolactone. The molecular formula of gentiolactone is C<sub>10</sub>H<sub>12</sub>O<sub>5</sub> and its monoisotopic mass is 212.068. B, RAW264.7 cells were seeded in 6-well culture plates (1×10<sup>6</sup> cells/well) and cultured with gentiolactone or helenalin for 24 hours. At the end of this period, the number of living cells in each well was counted.</p>