|   |  |   |  |   |       Antigen of Registered Virus       |   |       Immune Serum of Registered Virus       | 
|---|
 |   |       HI       |       CF       |       NT       |   |       HI       |       CF       |       NT       | 
|---|
 |       Immune Sera       |       Ht/Ho       |       Ratio       |       Ht/Ho       |       Ratio       |       Ht/Ho       |       Antigens       |       Ht/Ho       |       Ratio       |       Ht/Ho       |       Ratio       |       Ht/Ho       | 
|---|
 
  |  
  |  | *        Kindly supplied by Dr. Robert E. Shope        |  |        NT: LNI in dex        |  |       Murutucu       |       20/640       |       1/32       |       0/16       |       0       |   |       Oriboca       |       40/2560       |       1/64       |       0/64       |       0       |   |  |       Madrid       |       0/1280       |       0       |       0/64       |       0       |   |       Marituba       |       80/2560       |       1/32       |       0/64       |       0       |   |  |       Zegla       |       20/640       |       1/32       |       32/128       |       1/4       |       2.2/>3.5       |       Mardri       |       40/2560       |       1/64       |       0/64       |       0       |   |  | Gr. C hyperimmune ascitic fluid  * (does not include Patois and Zegla)   |       40       |   |   |   |   |       Zegla       |       80/2560       |       1/32       |       128/64       |       1/1       |       2.3/>3.6       |  
  |  |   |  
  |  
  |  |   |       CF:       |       Crude brain or liver antigens did not fix complement in the presence of mouse hyperimmune sera prepared with the following agents: VEE, EEE, WEE, Pixuna, Mayaro, Aura, Una, Guama, Guaroa, Wyeomyia, Kairi, Cache Valley and California.       |   |  |  |  |   |       HI:       |       Acetone extracted serum antigen was not inhibited by hyperimmune sera or ascitic fluid prepared with the following agents: VEE, EEE, Pixuna, Mayaro, Aura, Ilheus, SLE, YF, Bussuquara, DEN-2, Cache Valley, Guaroa, Wyeommyia, Maguari, Kairi, California, Capim, Guajara, Oropouche, Turlock, Bwamba, Anopheles A and B, Tacaribe, Changuinola, Cocal, VS-Indiana, Sicilian sandfly fever, Icoaraci and Chagres viruses.       |  
  |  |   |   
             |