39Every citizen of the Union may therefore rely on Article 18 TFEU, which prohibits any discrimination on grounds of nationality, in all situations falling within the scope ratione materiae of EU law, and those situations include the exercise of the freedom conferred by Article 21 TFEU to move and reside within the territory of the Member States (see Case C-85/96 Martínez Sala [1998] ECR I-2691, paragraph 63; Case C-209/03 Bidar [2005] ECR I-2119, paragraphs 32 and 33; and Case C-158/07 Förster [2008] ECR I-8507, paragraphs 36 and 37; and Case C-73/08 Bressol and Others [2010] ECR I-2735, paragraph 31).
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