Article 2 Nasopharyngeal carcinoma 2 controlled study 2 human 2 human cell 2 nasopharyngeal carcinoma cell line Cytotoxic activity 1 DNA damage 1 E. longifolia 1 Eurycoma longifolia 1 Eurycoma longifolia extract 1 G2 phase cell cycle checkpoint 1 IC50 1 LncRNA SPRY4-IT1 1 MTS assay 1 Metastasis 1 NP69SV40T cell line 1 Proliferation 1 RNA extraction 1 RNA interference 1 Southeast Asia 1 Soxhlet extraction 1 Twist related protein 1 1 Western blotting 1 alcohol 1 animal experiment 1 animal model 1 antineoplastic activity 1 apoptosis 1 cadherin 1