highly significantP<0-001
There were 17 lung tumours in 201 rats; only 6 of these occurred in 157 rats without asbestosis (3.8%) while 11 occurred in the 44 rats with minimal or slight asbestosis (25%), a highly significant difference (P<0-001).
There were 17 lung tumours in 201 rats; only 6 of these occurred in 157 rats without asbestosis (3.8%) while 11 occurred in the 44 rats with minimal or slight asbestosis (25%), a highly significant difference (P<0-001).