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Abdul Rahim likes the comment:
Socorro Magdalena Escorcia MartínezHi SocorroIB viruses have a natural tendency for changing, especially in the S1 region.There is no need for using different variants of IB viruses to get the mutations.During many many years, all the world used the H-120 IB classic strain to vaccinate. Despite it, many different and new variants developed such as the 793B, QX, IB-Var2 (Israel).Some of thes ...
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Location:Riyadh, Ar Riyad, Saudi Arabia
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