Medical Definition of Euglena gracilis
1.
Phytoflagellate protozoon of the algal order Euglenophyta (zoological order Euglenida). An elongate cell with two flagella, one emerging from a pocket at the anterior end. The organism exhibits positive phototaxis, determined by a photoreceptive spot on the basal part of the flagellum shaft being shielded by a carotenoid containing stigma (eyespot) in the wall of the pocket.
This entry appears with permission from the Dictionary of Cell and Molecular Biology
(11 Mar 2008)
Lexicographical Neighbors of Euglena Gracilis
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