Table 1. Estimated amounts of brain material removed with head meat, and spinal cord and DRG from each BSE-infected bovine carcass slaughter for consumption during 1980 to 1996.

Legislative period	Braina	Spinal Cordb	DRGb
Before November 1989 (SBO ban)	1.65 g (0.4–4.0 g)	3.3 g (0.24–12.02 g)	27 g
After November 1989: November 1989 to May 1990	1.83 g (0.4–5.1 g)	1.5 g (0.02–8.30 g)	27 g
June 1990 to February 1992	1.32 g (0.4–3.1 g)	1.5 g (0.02–8.30 g)	27 g
March 1992 to March 1996 (OTMR)	1.28 g (0.4–2.9 g)	1.5 g (0.02–8.30 g)	27 g

^aBased on the information given in Cooper and Bird [32] and Comer and Huntly [42].

^bBased on the information given in Cooper and Bird [31].