To see if they would indeed behave like heart cells, they mixed some of these in with cultures of heart cells from newborn rats. (sciencemag.org)
Back in 2011, for example, her lab demonstrated that beta cells in newborn rats are immature cells with very different gene expression and function than adult beta cells. (joslin.org)
Here we introduce neonatal novelty exposure, a recently developed neonatal stimulation paradigm, to dissociate two major sources of contribution to the psychological development of newborn rat pups: one from an indirect effect of maternal individual differences and the other from a direct effect of pup stimulation. (pnas.org)