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Use of correlation plots to show colocalization of two elements, nickel and iron, in the gut of a larval Chironomus dilutus, a species of nonbiting midge.86 The linear appearance of the nickel versus iron plot indicates correlation and colocalization of the two elements. A correlation plot of zinc versus iron is also shown, illustrating the appearance when there is little or no colocalization of two elements. Data were collected on SSRL 10-2.
