Comparison of the abundance of magnesium in the ESO-First Stars and in the three low-Sr/Ba giants studied here. The symbols are the same as in Fig. 3. In two low-Sr/Ba giants, [Mg/Fe] is higher than in the classical EMP stars as in many CEMP-s or CEMP-no stars, but in the third one [Mg/Fe] is close to the mean value, as it is also in many CEMP-s or CEMP-no stars.
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