The antibiotics disc were spaciousl

The antibiotics disc were spaciously placed on Mueller - Hinton agar plates previously seeded with 6h-broth cultures of Bacillus cereus isolates. The plates were incubated at 37oC for18-24h. The different zones of inhibition were measured to the nearest millimetre and interpreted as sensitive, moderate sensitive and resistant based on the interpretation table recommended by the disc manufacturer (Oxoid,
1998).