Euglena gracilis

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Eu·gle·na grac·'i·lis

an abundant species sometimes used in assaying vitamin B12 concentrations of serum and urine in various types of anemia.
References in periodicals archive ?
Growth and photosynthetic characteristic of Euglena gracilis.
Protective effects of sodium selenite on ofloxacin-induced loss of chloroplast DNA in Euglena gracilis.
Euglena gracilis is a freshwater species that can grow in a fairly wide range of temperatures (Sleigh, 1989).