…and purified if necessary

“A very short time before, the mysterious, invisible syphilis germ first seen by Bordet had finally been discovered by Schaudin and Hoffman, wise Germans who, in pursuit of the Louis citorrites, stumbled on the pale spiral, later the spirochete and finally Schaudin Treponema.

And a few months later, another German biologist, Wassermann, while testing in syphilis the complementary deviation phenomenon discovered by Bordet, found the reaction that was named after him, which was an invaluable diagnostic resource for many years. Later, once its technique had been perfected and expanded by the flocculation reactions, it would become an essential therapeutic guide, as it is today”.