[Histonet] Congo red and LED illumination problem?

[Morken, Timothy]

Something new to me... A pathologist said he is getting reports that LED illumination on newer microscopes is leading to faint or even false negatives for congo red amyloid birefringence due to the difference in spectrum between LED and tungsten filament lamps. Has anyone else noticed this?


Tim Morken
Pathology Site Manager, Parnassus
Supervisor, Electron Microscopy/Neuromuscular Special Studies
Department of Pathology
UC San Francisco Medical Center