Note on the Parasitic Growth-Phase of Trichophyton Rubrum in Hairs

Abstract

Hairs removed from the beard of a man with pustular folliculitis mere found to be infected by Tricltopltyfott rz~brz~tlz. Three different parasitic patterns could be distinguished: ( a ) the hair was surrounded by a loose network of septate hyphae, ( b ) the hair lvas encircled by this loose nctnrorli of septate hpphae and the cuticle ~nvaded by large arthrospores, or ( c ) septate, branching hyphae alone were fo11nd inside the hair-shaft. These threc endo-ectothris pictures constitute only transitory forms of the ultimate endothris parasitic growthphase of T. r~rbrzrnt which was not re;~checl in this case.