Table I.

Metal content in MBP-PL1

Sample	Batch	Zinc	Iron
		μg/ml	μg/ml
Buffer		NDa	ND
MBP (2 mg/ml)b	1	25	26
	2	ND	ND
MBP-PL1 (2 mg/ml)b	1	546	120
	2	554	184

^aND, not detectable.

^bTotal protein concentration, using gel densitometry.