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Difference in the weights of the right and the left ears of the rats (mg).
TPA, tetra-O-decanoyl phorbol acetate; MN, non-polar; MP, polar fraction, *P < 0.05, **P < 0.01, and ***P < 0.001.
When compared to the toxin control group. Marking from 1 to 5 are arbitrary and show the degree of redness in increasing order: 1-very low, 2-low, 3-mild 4-high and 5-very high.
