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(From AP Worldstream)
Byline: MARILYNN MARCHIONE
Two kidney dialysis patients from Argentina have received the world's first blood vessels grown in a lab dish from snippets of their own skin, a promising step toward helping people with a variety of diseases.
Doctors hope the technique someday will offer a new source of arteries and veins for diabetics with poor circulation and patients of heart bypass or dialysis.
The method doesn't involve stem cells and therefore is not politically or ethically contentious.
Scientists from Cytograft Tissue Engineering Inc., a San Francisco Bay-area biotechnology company, reported on it Tuesday at an American Heart…