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explains the interaction between cancer and the human body. Furthermore, in [ 2 ], Ö. Akın and Ö. Oruç have studied a predator-preymodel with fuzzy initial values. Then, by considering a second-order initial values Ö. Akın, T. Khaniyev, Ö. Oruç and I. B. Turksen [ 3 ] have generalized the model. Works about the prey-predator model of fuzzy numbers can be seen in [ 1 , 26 , 28 ]. Lastly, Benli and Keskin [ 8 ] considered a model which has a predator-prey structure between the monoclonal tumor and the macrophages. In this study, a new model upon the work of F. Bozkurt
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