1.  That discontinued practice was blamed for spreading mad cow disease in Europe.

2.  Poor maintenance practices have been blamed in previous mishaps.

3.  Some experts also blame the practice of feeding U.S. livestock and chickens huge quantities of antibiotics to boost food production.

4.  The plan on the table also called for a total ban on feeding ground animal entrails to cattle, a practice blamed for causing mad cow disease.

5.  The practice is blamed for helping speed the spread of AIDS through the community.

6.  The same practice has been blamed in part for the disaster.

7.  This practice is blamed for the wildfires that covered the region in haze from last July through April of this year.

8.  It blames practices in which laboratory workers culled pituitary glands, the source of hGH, from infected cadavers in hospital mortuaries.