Assertion: skin cell | /r/HasProperty | exposed to the transcription factors
Facets:
value: without the micrornas
type: OTHER
value: alone
type: MANNER
Source sentences:
text: His team, including co-first author Michelle C. Richner, senior research technician, showed that when the skin cells were exposed to the transcription factors alone, without the microRNAs, the conversion into neurons wasn't successful.