John was in the fertilized egg business. He had several hundred young layers (hens), called pullets, and ten roosters to fertilize the eggs. He kept records, and any rooster not performing went into the soup pot and was replaced. This took a lot of time, so he bought some tiny bells and attached the ...
Embryos aren't the ones with stem cells. We've got a few kinds of stem cells too, each with a different role. The term "potency" is used to describe the capacity of cells to change, or differentiate, into different cell types when they divide. There are totipotent, pluripotent, multipotent, oligopot ...
A new push to define ‘person,’ and to outlaw abortion in the process. Some abortion foes think the rationale for Roe vs. Wade is vulnerable. They’re trying to amend state constitutions — including California’s — to define personhood from conception. It is one of the enduring questions of religion an ...
A new study by an Australian fertility expert, Dr. David Greening of Sydney IVF, has caused a bit of a stir. Greening studied 118 men whose sperm had greater than average DNA damage and found that, when they ejaculated daily, the resulting sperm was healthier. All well and good so far but Greening’s ...
I was eating out at a mexican fast food joint with my family when I came across an extremely interesting article. It was in the Boulder post, no less (for those who don’t know: Boulder is a county in Colorado). What I read pretty much shocked me. Of course, I had read about amendment 48, but I had n ...
