65Where that is the case, the fact that an undertaking did not take part in all the constituent elements of a cartel or that it played only a minor role in the elements in which it did participate must be taken into consideration only when the gravity of the infringement is assessed and, as the case may be, in determining the amount of the fine (Commission v Anic Partecipazioni, paragraph 58 above, paragraph 90, and Case T-295/94Buchmann v Commission [1998] ECR II-813, paragraph 121).