These findings on gene expression in single embryonic stem cells are in concert with recent studies of early mammalian development, which reveal molecular heterogeneity and a stochasticity of gene expression in blastomeres. (journals.plos.org)
More than half of the 91 blastomeres divided at least once, and 28 formed clumps that grew in culture. (sciencemag.org)
Researchers could allow the removed blastomere to grow overnight, giving it time to divide. (sciencemag.org)