stem

effective? I ran across these two websites: http://denver.bizjournals.com/denver/stories/2007/11/26/story11.html http://www.regenexx.com/back-surgery-alternative/regenexx-lumbar-disc-patient-successes/ and am wondering if these treatments are really effective, and safe, if anyone else has...

Oh and do those valves run right in the head (IE no replaceable bronze valve guide)

just curious

Everything I've heard about it is that adult stem cells that have been reprogrammed to a pluripotent state are exactly identical to embryonic stem cells in every way. Is that the truth? I'm looking for a scientific answer here, not socio-political commentary, sound bite transcribes or bumper...

I got a new bike, the handlebars are canted and I need to align them. Which way should I be turning the stem bolt to loosen it? I know regularly, you would turn lefty loosey (CCW) but with the wedge system, should it be different?

I need a new stem. I have a Bontrager Select, 17 degree stem and I want to know how to distinguish the size. I sometimes see them range from 70mm-140mm.

plzz i need help tell me how much it iwill cost to fix if it costs money