Table 1. Effects of CuCl₂ supplementation on MCP 1-induced notochord deformation and albinism^{a , b} .

[MCP]/nM	[CuCl2]/nM	N	Notochord		Melanisation
			% Wavy (%)	Normal (%)	Albino (%)	Normal (%)
0	0	21	0	100	0	100
	100	20	0	100	0	100
	1000	19	0	100	0	100
100	0	20	100	0	0	100
	100	20	100	0	0	100
	1000	18	100	0	0	100
500	0	20	100	0	0	100
	100	4	100	0	0	100
	1000	0	Xc	Xc	Xc	Xc
1000	0	19	100	0	0	100
	100	8	100	0	75d	25
	1000	0	Xc	Xc	Xc	Xc
50000	0	20	100	0	100	0
	100	16	100	0	100	0
	1000	0	Xc	Xc	Xc	Xc

^aSupplementation with ZnCl₂ gave equivalent results, data not shown.

^bCuCl₂ alone does not induce notochord deformations.

^cLethal at high concentrations.

^dA mild decrease in pigmentation was observed. N = number of embryos scored.