The "ragged red fibers" in MELAS syndrome are visible under modified Gomori stain.
Gömöri trichrome stain is a histological stain used on muscle tissue.
It can be used to test for certain forms of mitochondrial myopathy.
It is named for George Gömöri, who developed it in 1950.
External links
Media related to Gömöri trichrome stain at Wikimedia Commons