Fertilization in humans and other mammals produces a new member of the species in the embryonic stage of its natural development. That is to say, the entity produced by the ...

Fertilization in humans and other mammals produces a new member of the species in the embryonic stage of its natural development. That is to say, the entity produced by the ...

“The development of a human being begins with fertilization, a process by which the spermatozoon from the male and the oocyte from the female unite to give rise to a ...

Barack Obama and some of his supporters are trying to court the anti-abortion vote, suggesting that the candidate’s stands on other issues — such as health care, economics, and foreign ...

We thank Professor Silver for his response . On the basis of this exchange, we are confident that readers will be able to judge whether Professor Silver’s claim that human ...

We have in many places argued for the humanity and fundamental dignity of human beings in the embryonic stage of development and all later stages. In defending embryonic human life, ...

In a pair of highly publicized articles, the South Korean scientist Hwang Woo-Suk claimed to have produced human embryos by cloning and to have generated from them several viable stem-cell ...

Recently the House of Representatives voted, 238-194, to repeal President Bush’s restrictions on federal funding for embryo-destructive stem-cell research, and the Senate is expected to move on a similar bill. ...