770 



YVETTE KUNZ 



FlG. 17. 



Retina of Lebistes (stage 7, 20th embryonic day) 

 stained for Lactate dehydrogenase activity. 



Fig. 18. 



Same as fig. 17, but treated with inhibitor to show 

 E-isozymes (incubation mixture see fig. 5). 



