Objective: To observe the different extracts from Radix Isatidis on multiplication of mice lymphocytes.
Method: Lymphocytes were separated and cultured. Immunological activities of different extracts from Radix Isatidis were studied by thermodynamics and the results were tested by the conventional pharmacological experiments.
Result: The results showed that the water extract and residue had significant immunological effects while organic solvent extracts had immunological activity to some extent.
Conclusion: The comparison of immunological activity among the extracts from Radix Isatidis were as follows: residue after extracting > general extract > nBuOH extract > EtOAc extract > CHCl3 extract > P E extract.