Injection into another mouse's blastocyst is the standard test for mouse embryonic stem cells.
The last group was tested on their English skills, but not with the standard test.
The results of the standard test would be expected by this weekend.
Later, a test showed that she carried a rare mutation not picked up by the standard test.
The standard test is a kind of microbial murder mystery: an antibiotic is used again and again, until bacteria in the victim colonies mutate, developing resistance.
In many cases, patients who have taken the standard test have failed to return to learn the results, hampering efforts to control the epidemic.
"They all pass the OBD II checks," he said, referring to the standard test used by motor vehicle agencies.
Her team investigated the outbreak using the new test, which is based on a technique known as P.C.R. (for polymerase chain reaction) and which can detect H.I.V., the AIDS virus, weeks earlier than the standard test.
But the larger issue, in my opinion, is how the Regents exam has become the standard test for all students, including special education and alternative-school children, regardless of their goals and aspirations.
Olympic doping officials are considering whether to tweak their tests after a recent British study showed green tea may hide testosterone from the standard test used to spot it.
The centers recently began a study to compare RNA testing with an advanced version of the standard test, which is easy to administer and can detect a substance produced by the virus in its early stages.
