− | |pagetitle =Pasteurella and Mannheimia species are small, Gram-negative bacilli or coccobacilli. They are common commensals of the upper respiratory tract and gastrointestinal tract mucosa of animals. | + | |pagebody = The ''Pasteurella'' and ''Mannheimia'' species are small, Gram-negative bacilli or coccobacilli. They are common commensals of the upper respiratory tract and gastrointestinal tract mucosa of animals. |