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MedReleaf ReleafDx

Canadian medical cannabis firm MedReleaf is launching in that country ReleafDx, a genetic test to help physicians in the prescription of cannabis. Based on a cheek swab, the test analyzes a patient's DNA and health conditions, providing information that a doctor can use to determine what cannabis product will work best for an individual, and the proper dosage. Dynacare, a Laboratory Corporation of America company, will manage the sample analysis and results reporting. The cheek swab can be done in doctors' offices or at a Dynacare Laboratory and Health Services Centre. The samples are then sent to Dynacare for analysis. Results are returned to the doctor with recommendations on the proper dosage of medReleaf's products. The test will be available in Canada starting in January.

The Scan

Dropped Charges

The US Justice Department has dropped visa fraud charges against five Chinese researchers, according to the Wall Street Journal.

More Kids

The Associated Press says Moderna is expanding its SARS-CoV-2 vaccine study to included additional children and may include even younger children.

PNAS Papers on Rat Clues to Human Migration, Thyroid Cancer, PolyG-DS

In PNAS this week: ancient rat genome analysis gives hints to human migrations, WDR77 gene mutations in thyroid cancer, and more.

Purnell Choppin Dies

Purnell Choppin, a virologist who led the Howard Hughes Medical Institute, has died at 91, according to the Washington Post.