CBA Florida Inc. (fka CBAI)

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imho embryonic stem cells are the most desirable primarily for research as they are the easiest to maintain in the lab environment and offer greater ("unlimited supply") material needed to conduct research. once the research proves a use/procedure, then people would be more inclined to use their own stored umbilical stem cells (limited supply ie who wants to give up their cells for research) as they would not need to be matched because they are your own cells.