Who hasn't seen it before: the view through the microscope in which a sperm penetrates an egg cell and fertilizes it. This fundamental step in procreation happens dynamically and seemingly without ...

Scientists have used an experimental approach to form human eggs in the lab that can then be fertilized ... and eggs carry half the chromosomes as nonreproductive cells in the body do. During ...

Scientists created the eggs using DNA from adult skin cells, a step that could someday potentially lead to new ways to treat ...

Researchers at Oregon Health & Science University (OHSU) have developed a remarkable new way for making human body cells ...

Healthy human eggs contain 23 chromosomes, which pair with 23 more from sperm during fertilization, a crucial step for developing ... of their chromosomes into a structure known as a polar body, ...

The team used human stem cells to create embryo-like structures dubbed “hematoids” that mirror some features of early human ...

Moira Gleason is a Daily Signal journalism intern. When Donald Trump signed an executive order aimed at lowering costs for and reducing barriers to in vitro fertilization last month, that renewed the ...