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Anal."],"published-print":{"date-parts":[[2025,2,28]]},"abstract":"<jats:p>Abstract.<\/jats:p>\n                  <jats:p>In this paper we consider two diffuse interface models for tumor growth coupling a Cahn\u2013Hilliard type equation for the tumor phase parameter to a reaction-diffusion type equation for the nutrient.\u00a0The models are distinguished by the presence of two different coupling source terms. For such problems, we address the question of the limit, as the diffuse interface parameter tends to zero, from diffuse interface models to sharp interface ones, justifying rigorously what was deduced via formal asymptotics in [H. Garcke, K. F. Lam, E. Sitka, and V. Styles, Math. Models Methods Appl. Sci., 26 (2016), pp. 1095\u20131148]. 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