http://medicalxpress.com/ en-us Medical Xpress internet news portal provides the latest news on Health and Medicine. A team of researchers from Spain and Switzerland have developed a new model for studying the development of testicular germ cell tumors by transplanting embryonic stem cells into the seminiferous tubules in mouse models, resulting in the development of testicular germ cell tumors (TGCT) that mimic the early stages of TGCT development. The study, published in Cell Transplantation (20:5), is now freely available on-line. http://medicalxpress.com/news/2011-07-germ-cell-tumors-embryonic-stem.html Cancer Mon, 11 Jul 2011 12:14:41 EST news229605253 A 59-year-old Houston man became the first individual in the United States to enroll in a study using stem cell transplantation during cardiac bypass to treat severe heart failure. http://medicalxpress.com/news/2011-05-patient-enrolled-stem-cell-transplantationcardiac.html Cardiology Thu, 12 May 2011 15:08:58 EST news224431602 A study published in the current issue of Cell Transplantation has demonstrated for the first time that endothelial cells derived from cryopreserved human umbilical cord blood cells are phenotypically, as well as structurally and functionally, indistinguishable from freshly isolated endothelial cells. The success of the author's work eliminates the necessity of performing cell isolation procedures prior to their use in clinical transplantation. http://medicalxpress.com/news/2011-05-cryopreserved-endothelial-progenitor-cells-phenotypically.html Medical research Wed, 11 May 2011 15:13:15 EST news224345565