PHOTORECEPTOR PIGMENT OF Physarum polycephalwn 323 



230 



250 



270 



430 



M)_l 



Fig. 1. The absorption spectrum of component 1 from Physarum poly- 

 cephalwn in neutral and acid solution. 



within 2 to 3 cm of the top of the column. It could not be eluted with 

 organic solvents, but was readily eluted by O.liV HCl. Component 2 is 

 weakly adsorbed, and its methanol solution was collected at the foot 

 of the column. 



430 



Fig. 2. The absorption spectrum of component 2 from Physarum polx- 

 cephalum in neutral and acid solution. 



