"T . papuae " is a nonencapsulated species, found in domestic and sylvatic swine of Papua New Guinea.
2.
Further serological testing is necessary to distinguish the capsular polysaccharide and differentiate between " H . influenzae " b and nonencapsulated species.
3.
The encapsulated strain of " P . gingivalis " is much more virulent than the nonencapsulated strain in a mouse abscess model.
4.
The recognition of " M . catarrhalis " as a pathogen has led to studies for possible nonencapsulated strands of " M . catarrhalis ", which suggests it may be used as an antigen for immunization.