Bashi Z, زهراء, Jankeer M, منى. Effectiveness of the enzyme cytosine deaminase in the free living ciliary organism Tetrahymena pyriformis (Ehrenberg, 1830). EDUSJ [Internet]. 2008 Sep. 1 [cited 2025 Aug. 4];21(3):15-27. Available from: https://rjps.uomosul.edu.iq/index.php/edusj/article/view/17523