Dirks showed that some of the immature-looking cells from his patients could form tumorlike clumps in the test tube, unlike most other cells from the tumors, but he didn't have a method to pluck out the stem cells.
In the test tube Trail causes cancer cells to kill themselves while sparing normal cells.
They could be used to build an artificial artery in a test tube or the stem cells could be injected straight into the heart and they could form within it.
In the lab, Gracias' researchers grabbed dozens of live animal cells from a clump at the end of a tube the width of a capillary, without killing the cells.
Researchers noticed early on that rapamycin slowed the growth of cancer cells in the test tube.
Sure enough, he found that the only cells that could produce new tumors in the test tube were the ones with CD133--strong circumstantial evidence that defective stem cells were the growth factor in brain cancer.
Tumor necrosis factor, named for its ability to make cancer cells die in the test tube, had fizzled in human tests because it was too toxic.
In the test tube, antisense compounds failed to enter the cells containing the target genes.
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At a lunch at One Market in San Francisco, Chris Gronet, a Solyndra founder and then-chief executive, pulled from a case a long cylindrical tube that was coated in thin-film solar cells.
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Dr Reynolds, and others, have shown that under the influence of suitable growth factors, stem cells can lead full lives in a test tube.
Friedhoff and Buxbaum have shown two things: First, they showed that lovastatin could prevent cells from making beta amyloid in the test tube in doses that could be realistically given to patients.
But in test-tube experiments the mock DNA couldn't pierce the membrane of human cells.
In Dr Djerassi's future world, men and women will have their sperm and eggs frozen in their 20s and then undergo sterilisation, free to pursue their professional and sexual interests content in the knowledge that their cells can be safely resurrected and reliably made to unite in a test-tube whenever they want a child.
Macchiarini performed the nine-hour operation on April 9 at the Children's Hospital of Illinois after carefully creating the windpipe using stem cells from Hannah's bone marrow that were saturated over a matrix of plastic fibers shaped into a tube.
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