Human embryos are human beings

"It is grossly immoral to kill embryonic humans in order to use their bodies as medical consumables, but this is precisely what happens in embryonic stem cell research. Unborn children are killed to extract their stem cells for use in medical experiments. This practice also violates the commandment 'You shall not murder.'

"Recent scientific advances show that the medical treatments that researchers hope to develop from embryonic stem cells may be developed by using adult stem cells instead. Adult stem cells can be obtained without doing harm to the adults from whom they come. Thus there is no valid argument in favor of using embryonic stem cells. But even if there were benefits to be had from such experiments, they would not justify destroying innocent human beings."

from Voter's Guide for Serious Christians
by Catholic Answers, Inc

A Penitent Blogger writes that while we work to protect unborn life, we must also do everything we can morally do to find cures for disease and to care for people who are ill or otherwise disabled.