Xanodyne Pharmaceuticals   6 studies
Xanthus Pharmaceuticals, Inc.   2 studies
Xcyte Therapies   4 studies
XDx   4 studies
Xencor, Inc.   1 study
Xenon Pharmaceuticals Inc.   1 study
XenoPort, Inc.   4 studies
Xenova Biomedix   2 studies
Xian-Janssen Pharmaceutical Ltd.   5 studies
Xijing Hospital   17 studies
Xi’an Jiaotong University College of Medicine   4 studies
Xoft, Inc.   1 study
XOMA (US) LLC   9 studies
Xsira Pharmaceuticals   1 study
XTL Biopharmaceuticals   4 studies
Xuanwu Hospital, Beijing   3 studies
Xylos Corporation   1 study