Assertion: stem cell's role | /r/CapableOf | regulate cell fate specification
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text: Suila Heli et al. speculate that in human stem cells extracellular O-GlcNAc and extracellular O-LacNAc, play a crucial role in the fine tuning of Notch signaling pathway - a highly conserved cell signaling system, that regulates cell fate specification, differentiation, left–right asymmetry, apoptosis, somitogenesis, angiogenesis and plays a key role in stem cell proliferation (reviewed by Perdigoto and Bardin and Jafar-Nejad et al.)