How can DNA from a cheek swab determine if someone is closely ... submitting a saliva sample to a laboratory. Scientists then extract DNA from the saliva and compare that DNA to various reference ...

The Suffolk County District Attorney’s Office is seeking a cheek swab of Schwally, 64, to serve as a comparative analysis to a DNA profile from a blood test of the driver that matched DNA swabs ...

E-cigarette users had similar changes to the DNA in specific cheek cells as smokers, according to a new study that provides some insight into the health effects of vaping. The researchers studied ...