الفهرس 
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Abstract
This study was a trial against Foot and Mouth Dise its use under laboratory co its characters (potency as mparing it with those for rately.The following resul
prepare a combined vaccine and Rift Valley Fever and tion as well as investigate 1 as inimunogenicity) and co— two vaccines when used sepawere achieved:
1- Foot were layer their high being virus virus
and Mouth Di prepared on cultures.
infectivity infective an
TCID5O and io8 TCI respect ivel
sease and Rift Valley Fever viruses Roller system of BFTK21 clone13 mono-
The prepared viruses were tested for and antigenicity and proved to have d CF titres for vaccine preparation and 1/64 for Foot and Mouth Disease
and 1/256 for Rift Valley Fever
2- Both foot and mouth d
were inactivated usin
ncentration and time
for 48 hours at 26°C
37°C for RVFV.
isease and Rift g formalin at for each virus for FMDV, 0.2%
valley fever viruses the recommended coseparately (0.06% and 24 hours at
Foot and could be
Mouth Disease virus (either liv. or inactivated) adsorped on alum. gel of Rift Valley fever
to ase nd i wel the ts