Sexual reproduction of Tetrahymena thermophila.
Confocal micrograph illustrating sexual reproduction of the ciliate protist, Tetrahymena thermophila, six hours after mating. After fixation and permeabilization, the cytoskeleton was labeled with an anti-tubulin antibody and subsequently visualized with Texas Red®-X goat anti–mouse IgG antibody (Cat. No. T6390). The macro- and micronuclei were stained with SYTOX® Green nucleic acid stain (Cat. No. S7020). Image contributed by David Asai and Amy Walanski, Purdue University.