Case 78. Reference case 78C

       
  Argentaffin reaction seen in the cell wall of Cryptococcus neoformans (Fontana-Masson)  
       

 

  It is of note that C. neoformans is stained with Fontana-Masson's argentaffin reaction. The other brown fungi are also positive. The size of the yeasts becomes much larger, when they grow outside the cell.