

LUi 







v O 



G 



tr 



j 



K 



Fig. 94. Blastomyces dermatitidis. A, histologic section, shows granulomatous changes 

 with multiple abscesses; X 35. B shows pus, mainly composed of polymorphonuclear leuko- 

 cytes; X 150. C, the same section, shows the budding micro-organism; X 430. D, direct mount 

 of pus, shows double-contoured budding cells. E, filamentous colony seen alter (luce weeks, 

 win ii growth develops on maltose agar at room temperature. F, colonies grown on blood agar 

 at 37 C; these are moist, brown and limited in size; X 1.8. ('•. mount from colony grown on 

 blood agar at 37 C. after one week, showing double-contoured cells with budding; > tilt 

 H, I, ] and K, hanging-drop preparations from a colony mowing at room temperature. Witli 

 this temperature there is early germination of the capsulated form, with typical filaments; > 280, 

 X 150, X 280 and X 555, respectively. 



327 



