Sequential Infection with Common Pathogens Promotes Human-Like Immune Gene Expression and Altered Vaccine Response Researchers sequentially infected laboratory mice with herpesviruses, influenza, and an intestinal helminth and compared their blood immune signatures to mock-infected mice before and after vaccination against yellow fever virus (YFV-17D). Sequential pathogen exposure induced gene signatures that recapitulated those seen in blood from pet store-raised versus laboratory mice, and adult versus cord blood in humans. [Cell Host Microbe] Abstract | Graphical Abstract Cryopreservation Has No Effect on Function of Natural Killer Cells Differentiated In Vitro from Umbilical Cord Blood CD34+ Cells Researchers generated large numbers of functional natural killer (NK) cells from cord blood CD34+ cells that maintain the same phenotype and function post-cryopreservation, which will allow for multiple infusions of a highly cytotoxic NK cell product. [Cytotherapy] Abstract Preconditioning in Lowered Oxygen Enhances the Therapeutic Potential of Human Umbilical Mesenchymal Stem Cells in a Rat Model of Spinal Cord Injury Investigators hypothesized that preconditioning of umbilical cord mesenchymal stem cells in physioxic environment would enhance the regenerative properties of these cells in the treatment of rat spinal cord injury. [Brain Res] Abstract Conditioned Medium of H9c2 Triggers VEGF Dependent Angiogenesis by Activation of p38/pSTAT3 Pathways in Placenta Derived Stem Cells for Cardiac Repair Scientists examined the in vitro and in vivo cardiac differentiation potential of human placenta derived stem cells; a unique, abundant, and non-immunogenic cell source. [Life Sci] Abstract Early Production of Human Neutrophils and Platelets Post-Transplant Is Severely Compromised by Growth Factor Exposure Investigators showed that exposure of CD34+ cord blood cells ex vivo to growth factors that markedly expand their numbers and colony-forming cell content, also rapidly produced a significant and sustained net loss of their original short-term repopulating activity. [Exp Hematol] Abstract Mesenchymal Stem Cells Differentiated into Chondrocyte-Like Cells Investigators characterized the ‘stem-ness’ properties of human amniotic fluid derived-mesenchymal stem cells and their potency with regard to the chondrogenic differentiations using the scaffold cultivation method. [Acta Histochem] Abstract  |