One of the advantages of the alphavirus vector that uses a double subgenomic RNA for expressing foreign proteins is that it does NOT need a helper virus to produce virions.

Question

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This statement is correct. The double subgenomic RNA in the alphavirus vector allows for efficient expression of foreign proteins without the need for a helper virus to produce virions. This is one of the advantages of this vector system.

One of the Advantages of the Alphavirus Vector That Uses