Method for determination of chemoattraction in Tetrahymena pyriformis.

Earlier works presented a variety of techniques for detection of chemoattractants in ciliates. The present agar layer model and the used double-P cutter give an easy, reproducible way of quantitative evaluation of positive chemotaxis. Beside the two-channel chamber, the multi-channel one seems to be also useful in characterization of different taxons or different chemoattractants.