"I knew that I was going to need luck... Sheesh! Don't rub it in, Dad!"Thanks, dad" I said as I got up, slung my backpack over my shoulder and headed for the door.I opened the door and stepped out into the bright, crisp Iowa morning. I closed the door behind me and started walking the all too familiar route to my personal hell that is called school.I met up with Dave along the way. He lives a few blocks away from me and we would often walk with each other, making small talk and stuff.He's a great guy, and a real cutey! He's about my height, and has the brightest red hair I have ever seen. His bright green eyes compliment his hair and his eyes seem to sparkle when he laughs. And I mean they sparkle! He has lots of freckles on his face too (which I think is just too cute! I've often wondered what it would be like to kiss every one of those freckles.) "Hey Dave!" I called as I saw him come around the corner."Paul!" he said as he jogged across the street up to me with his backpack. "No, I'll be okay with asummary." The cell sample is genetically manipulated to make it female, two Xchromosomes. It's also made young again, a stem cell. While that'shappening, other scientists create a scaffold, if you will, a porousframework of biologically compatible material. The cells are introducedto the scaffold, with some proprietary chemical treatment, and theyattach and grow into the desired organ."Tom frowned as he pondered the information. "But ... the organs needblood vessels and such."Rachel nodded. "Ah, you see, you _did_ learn something in science. Thenew organ develops just like it would if it were growing in a fetus,including vascularization. An artificial heart supplies oxygenated bloodto the new organ." So you make my cells into blood cells too?" Yes. One big benefit of the process is that we can grow aninexhaustible supply of blood. You did notice that the need for blooddonors has really dropped, right? It's because we can supply blood fromcell samples..
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