MICROBIAL CELL WALLS 



Fig. 1. Microfibrillar structure in the wall of Candida tropicalis 

 (X 18,500). By courtesy of Drs. Houwink and Kreger (Ref. 25). 



able to show that the glucan component of baker's yeast 

 wall possessed the fibrillar structure. The microfibrils in 

 the yeast wall (Fig. 1) are arranged at roughly 90° to one 

 another. However, around the bud scars the fibers are 

 oriented differently, and Falcone and Nickerson ^s have 

 proposed an explanation for the fiber orientation, based on 

 a local explosion or "blow-out" of the wall during cellular 

 division. Northcote, Goulding, and Home ^9 have also 

 shown that by degradation of the isolated wall of Chlorella 



