How are modified genes introduced into the host cells for preparing third-generation vaccines?
A. Introduced by DNA injection
B. Introduced by cooling and then icing the cells
C. Introduced by first giving a heat shock and then cooling the cells
D. Introduced by making new pathways for pathogens
Answer:A
How are modified genes introduced into the host cells for preparing third-generation vaccines?
A. Introduced by DNA injection B. Introduced by cooling and then icing the cells C. Introduced by first giving a heat shock and then cooling the cells D. Introduced by making new pathways for pathogens