The Ziehl–Neelsen stain, also known as the acid-fast stain, was first described by two German doctors: the bacteriologist Franz Ziehl (1859–1926) and the pathologist Friedrich Neelsen (1854–1898).
Franz Liszt | Franz Schubert | Franz Kafka | Franz Joseph I of Austria | Franz Ferdinand | Franz Boas | Franz Ferdinand (band) | Archduke Franz Ferdinand of Austria | Franz Lehár | Franz Josef Land | Franz Werfel | Franz von Papen | Franz Kline | Franz Beckenbauer | Franz Marc | Franz Kneisel | Franz Joseph | Franz Welser-Möst | Franz Rosenzweig | Franz Kugler | Franz Xaver Winterhalter | Franz Sigel | Franz Josef Strauss | Philipp Franz von Siebold | Franz Wilhelm Junghuhn | Franz Schreker | Franz Xaver Kroetz | Franz Xaver Gruber | Franz Waxman | Franz-Paul Decker |