1                                                             However, the mechanism remains elusive.

2 ers and functionality of CD4 T cells is observed in sepsis; however, the mechanism remains elusive.

3 ect their chromatin environment or sub-nuclear positioning, however the mechanism remains obscure.

4                                                             However, the mechanism remains poorly defined.

5                                                             However, the mechanism remains to be fully elucidated, and UL

6                                                             However, the mechanism remains unclear.

7 tter activity requires an intact transmembrane (TM) domain; however, the mechanism remains unclear.

8 ed in ischemic tissues and necessary for revascularization; however, the mechanism remains unclear.

9 bules are known to play an important role in cell polarity; however, the mechanism remains unclear.

10  C virus (HCV) clearance by interferon (IFN)-alpha therapy; however the mechanism remains unknown.

11 ms defibrillate more effectively than monophasic waveforms; however, the mechanism remains unknown.

12 he most important risk factor for atrial fibrillation (AF); however, the mechanism remains unknown.

13 unds is decreased in the presence of amino-bisphosphonates; however, the mechanism remains unknown.

14 y tethering papillomavirus episomes to mitotic chromosomes; however, the mechanism remains unresolved.