Table 1. Summary of the redshift to heme caused by Aβ and the effect of zinc and copper.

Heme-b, 50 μM	Aβ(1-40) (50 μM) added relative to metals		Zn2+, 100 μM	Cu2+, 100 μM	Redshift in heme spectrum
	Before	After
+	+	-	-	-	20 nm
+	+	-	+	-	20 nm
+	+	-	-	+	20 nm
+	+	-	+	+	20 nm
+	-	+	+	-	Weak
+	-	+	-	+	Weak
+	-	+	+	+	Weak

+, reagent included in the mixture. -, reagent was not included in the mixture. Zn²⁺, ZnCl₂; Cu²⁺, CuSO₄.