Assertion: rickettsia | /r/HasAspect | common feature
Facets:
Source sentences:
text: They are considered a separate group of bacteria because they have the common feature of being spread by arthropod vectors (lice, fleas, mites and ticks).
text: They are considered a separate group of bacteria because they have the common feature of being spread by arthropod vectors (lice, fleas, mites and ticks).