What type of collection does Etarcomol and Medb have in common?
Etarcomol Etarconol is a character from the Ulster Cycle in Irish folklore. He is the son of Eda and Léthrenn and a foster-son of Ailill and Medb. He was the first champion to face Cúchulainn in single combat. He was killed as Cúchulainn struck down through his crown and split him "to the navel".
New methylene blue New methylene blue (also NMB) is an organic compound of the thiazine class of heterocycles. It is used as a stain and as an antimicrobial agent. It is classified as an azine dye, and the chromophore is a cation, the anion is often unspecified.