TABLE 1.

Occurrence of mycophenolic acid in maize and grass silage

Type of silage	No. of samples analyzed		Mean (range) concn (μg/kg) of mycophenolic acid
	Total	Positive
Maize	135	38	690 (20–23,000)
Grass	98	36	2,200 (21–35,000)
Total	233	74	1,400 (20–35,000)