Light from cells’ own chemistry reveals their activity.

It reads immune-cell function from an ordinary blood draw already banked worldwide.

Energy-carrying molecules glow faintly on their own, and that glow shifts between a resting and a working cell.

The method still needs testing against a clinical reference before any diagnostic use.

How each outlet framed it
Phys.org
highlights optical imaging revealing immune cell metabolism without sample alteration, expanding clinical utility of blood draws

Sources: Phys.org