Answer:
can be identified and classified by differences in their flagellar proteins.
Step-by-step explanation:
Pathogenic bacterias are forms of bacteria that can be identified in various ways.
One of the ways to identify them is through examining of their features which can be classified by differences in their flagellar proteins.
Another way to identify them is knowing that they are the type of bacteria that causes infections in the host.
For example, Salmonella and E. coli