Post has been experimenting with growing in vitro meat from myosatellite cells, extracted from mammalian biopsies.
These needle biopsies were once discouraged but are now done in very specific circumstances.
They received one-fifth to two-thirds more gallbladder operations, knee replacements, breast biopsies, and bladder scopes.
Also, Dr. Schlossberg noted, the figures, which cover 36, 261 biopsies from 2005 through 2007, are five years old.
Gracias' microgrippers could be used for things like very minimally invasive biopsies, but he has much bigger--or, smaller--plans.
That leads to a lot of unnecessary surgery, biopsies, and follow-up scans on people who are completely healthy.
The team also compared the samples with biopsies taken from six infants with another liver condition called cholestasis.
They found around two third of genetic faults were not repeated across other biopsies from the same tumour.
The findings may explain why personalised cancer treatments based on biomarkers from tumour biopsies are not always successful.
And even though the technology doesn't detect any more cancers, the number of breast biopsies went up 21 percent.
The Cincinnati team obtained biopsies of livers of 14 infants with biliary atresia.
Moreover, those who did check themselves had almost twice as many biopsies with benign results as those who did not.
"Before he was 5 years old, he had probably 70 liver biopsies and they knocked him down with some horrific drugs, " said Wolf.
"So far we've prevented 20 liver biopsies, which is a huge benefit to these patients and to the health economy, " Dr Wright added.
BBC: Liver damage is 'silent killer' cirrhosis patient warns
Rather than once a year, women are now encouraged to get these exams less frequently to avoid false positives, potentially risky biopsies and undue anxiety.
The rest have involved everything from simple biopsies to colon cancer.
Moreover, there were significant differences between mutations in the original tumor and the site of metastasis, suggesting the need for additional biopsies as a patient's cancer progresses.
Oncologists Weiss and Litton discourage routine mammograms for younger women, because their breast tissues are dense, making it harder to detect abnormalities and resulting in unnecessary biopsies.
Vorp added that biopsies carry their own risks, such as infection and other complications, and that the study needs to be replicated in a larger study group.
About 90% of the resulting biopsies found no cancer, according to the study, co-written by Dr. Berg and published last year in the Journal of the American Medical Association.
WSJ: Dense Breasts Pose a Dilemma in the Search for Breast Cancer
"There are so many unneeded biopsies and so much unneeded testing because of false positives, " said Hall, who has studied the issue and who has a master's in kinesiology.
In a three-year study of high-risk women, biopsies were performed as a result of sonograms 7.8% of the time in the first year and 5% in the second and third years.
WSJ: Dense Breasts Pose a Dilemma in the Search for Breast Cancer
The biopsies can be done through an endoscopy, in which a fiber-optic tube is placed in the mouth and down into the small bowel or through some even less invasive procedures.
While these tests can detect cancer, they also can produce false positive results that lead to unnecessary and uncomfortable biopsies and treatments that carry undesirable side effects such as impotence and urinary incontinence.
CNN: Let men decide on prostate screening, cancer society says
In the early 20th century, there had been interest in an ulcer link to the spiral-shaped bacterium until a large 1954 U.S. study failed to find it in stomach biopsies, delaying the discovery for 28 years.
Researchers are now studying whether gut neurons, which can be sampled through a routine colonoscopy, may help clinicians diagnose and track the disease without invasive brain biopsies, says Pascal Derkinderen, a professor of neurology at Inserm, France's national institute of health.
Dr Lassmann and collaborators from the Mayo Clinic in Rochester, Minnesota and the University of Gottingen in Germany gathered tissue samples from 51 patients who had brain biopsies performed during acute flare-ups of MS and 32 who died during acute episodes.
That leads to thousands upon thousands of unnecessary biopsies every year. (The test is guilty of false negatives, too: PSA fails to spot cancer 15% of the time.) Moreover, up to 75% of prostate tumors being detected now by PSA are too small to be an immediate threat, asserts Stanford University urologist Thomas Stamey.
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