One of the mysteries of the English language finally explained.
Attributive and in the genitive. Used with reference to a technique for staining chlamydiae and rickettsiae employing fuchsin and methylene blue; especially in "Macchiavello method", "Macchiavello stain".
1940s. From the name of Atilio MacchiavelloVaras (b. 1902), Chilean bacteriologist, who developed the technique.
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