Blood's tiny RNA clues could unlock the stroke 'Clock'

This study looks at whether tiny RNA particles called exosomal microRNAs in the blood can act as a 'stroke clock' for people with a severe type of stroke caused by a blocked large artery in the front of the brain. Researchers will compare blood samples from stroke patients to healthy controls to see if certain microRNAs are different. They will also check if these microRNAs differ between patients with good versus poor collateral blood flow, which might help doctors estimate stroke onset time and guide treatment.