For the first time, scientists have been able to produce kangaroo embryos through in-vitro fertilization (IVF), an important ...

A South Dakota representative is trying to mandate showing videos of abortions in high school health classes and the process ...

The debate over when human life begins took a sharp turn in Texas, where a state legislator filed a bill that would define an ...

Unless prohibited, sperm and ovum could also be used for non-human fertilization in human-animal chimera research; and Upon donating one’s human reproductive material for medical research or ...

In humans, males have both male and female sex chromosomes. In Komodo dragons, females do—so Flora had within her the genetic materials needed for embryos to develop. This self-fertilization ...

This is the story of your creation. It began with a sperm, the smallest cell in the human body, fusing with the biggest cell… an egg. Every day, the human male produces hundreds of millions of ...

Even though the genetic fingerprint of human sperm has been defined, its role in orchestrating fertilization and the development of the early embryo remains vague. Here we show that human male ...

Figure 1: Overview of the imprinted domain in human 15q11–q13 and the PWS family studied. We isolated mouse oocytes following hormonal stimulation as described 19. We isolated mouse spermatozoa ...