Filtrability of the Chromogenic Culture (Duval) Obtained from Human Leprosy

It would appear from the work of others that a filtrable form of B. lepræexists in vivofor the respective bacilli of human and rat leprosy, since in vitrogrowth is said to have occurred from the cultured filtrates. Employing filtrates of cultures of B. lepræ chrome(Duval) we have been unable after repeated attempts to demonstrate a filtrable stage of this microörganism.