Freezing medium: 90% fetal calf serum, 10% DMSO (sterilized, 0.22-μm filter) HSF-6 freezing medium: 90% fetal bovine serum (heat-inactivated; HyClone), 10% DMSO (sterilized, 0.22-μm filter) 2% ...

In the mouse developing embryo, she previously demonstrated a bias at the two-cell stage: one cell contributed more to fetal tissue and the other to the placenta. 4 “We know so little about the very ...

Learn more about the National Academies’ various programs designed to connect, engage, and inspire. In 2005, the National Academies released the book, Guidelines for Human Embryonic Stem Cell Research ...

Jacob Hanna, a stem cell biologist at the Weizmann Institute of Science, wanted to know why this transition occurs. To answer this question, Hanna and his team set out to develop an ex utero embryo ...

We report here the transcriptional profiling of the cell cycle on a genome-wide scale in human fibroblasts. We identified approximately 700 genes that display transcriptional fluctuation with a ...

Scientists have long dreamed of plucking those naive cells from a young human embryo and coaxing them to perform, in sterile isolation, the everyday miracle they perform in wombs: transforming ...

Using plant stem cells is one thing. Using human stem cells in medicine is quite another. Scientists have found ways to grow embryonic stem cells in the lab, and are trying to use them to cure ...

Emerging findings suggest that viral DNA may play an important part in how embryos form, right after fertilization.

Destructive Human Embryonic Stem Cell Research—The term “destructive human embryonic stem cell research” means any research that involves the disaggregation of any human embryo for the ...

Their study, published in the journal Developmental Cell, indicates that transposable elements are critical to ensure that ...

This study provides a valuable new resource to investigate the molecular basis of the particular features characterizing the pipefish embryo. The authors found both unique and shared gene expression ...