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| 1. |
Nowadays, safer vaccines are being produced. |
| Answer» Solution :(1) Before the advent of BIOTECHNOLOGY, the vaccines were made from inactive or dead pathogens of that disease. (2) Such vaccines used to produce some disease symptoms is somecases. (3) The antigen of the disease is researched upon and its genetic code is found out. (4) A similar antigen is made in thelaboratories which is used as avaccine. (5) Such vaccines are more thermostable and remain active for longer duration. THEREFORE, the vaccines are now safer. | |