The protozoan Tetrahymena as a bioindicator to screen bioactive substances.


Tetrahymena thermophila has been used as a "swimming receptor" to study its chemotaxis in the presence of various bioactive substances from herbal plants. Chemotaxis of this ciliated protozoan is, in part, controlled by a cyclic GMP-dependent protein kinase (PKG), which can adjust ciliary beating. In this paper, the effects of Ginkgo biloba extract (GBE… (More)


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