Postmortem examinations 



ore required to d 

 the cause of death i 

 poultry diseases. 



lagnose 

 n many 



l» 



Testing milk samples in the control of mastitis in cattle. Film is being 

 prepared to detect streptococcus germs (inset), an important cause of 

 the disease. 



The rapid serum agglutina- 

 tion test, which detects chronic 

 respiratory disease, may 

 prove useful in establishing 

 flocks free of the disease. 



loduction methods may develop 

 le in tubes and bottles. 



Machine at right automatically gets tissues ready to be placed on 

 slides. At left, tissues on slides are being stained for final examination. 



