Assertion: rickettsia | /r/HasProperty | obligate
Facets:
Source sentences:
text: The rickettsia are bacteria which are obligate intracellular parasites.
text: The rickettsia are bacteria which are obligate intracellular parasites.
text: The taxa chlamydias and rickettsias are obligate intracellular pathogens, feeding on cells of host organisms; they are metabolically inactive outside of the host cell.