To isolate the DNA, researchers used a laboratory technique known as polymerase chain reaction, or P.C.R.
The new research combines old-fashioned fieldwork with a new laboratory technique called thermochronology.
The government is also buying 220 million doses made by a new laboratory technique.
The claim was preposterous by scientific standards -- that is, if cloning is defined by a laboratory technique.
Tables of normal reference values must be updated regularly to react to changes in laboratory technique.
Dr. Ramsey did not anticipate that his laboratory technique would have such applications.
This is a standard laboratory technique, but it raises concerns about safety, because the cells could harbor viruses that would infect people.
This is a standard laboratory technique, but experts fear mouse cells could transmit viruses when the stem cells are transplanted into people.
Using a novel laboratory technique, academic researchers recently tested a variety of vaccines and found the extraneous viral components only in Rotarix.
Scientists have used mouse cells to feed the growth of the human stem cells, which is a standard laboratory technique but raises concerns about whether the cells will be suitable for transplanting into people.
Instead, scientists working with the health agency -- in London, at the Centers for Disease Control and Prevention in Atlanta, and elsewhere -- are using a newer laboratory technique known as reverse genetics.
