Euglena gracilis var. bacillaris Pringsheim
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Schiff JA, et al. Isolation of Mutants from Euglena gracilis. Methods Enzymol. 143-162: 1971..
Schiff JA, et al.  Isolation of Mutants of Euglena gracilis: An Addendum. Methods Enzymol. 69: 1-29, 1980.