Assertion: virus | /r/HasAspect | detectable mutations
Facets:
Source sentences:
text: During acute or chronic infection, many HIV-infected individuals who are not on drug treatment have high levels of circulating virus that is ostensibly wild type; the virus has no detectable mutations that would make it resistant to drugs like tenofovir (Viread) or lopinavir/ritonavir (Kaletra).