The main objective of phase 3 trials is to verify the therapeutic action of a new substance in a large number of patients, essentially to determine the risk/benefit ratio. Before phase 3, the substance is not regarded as a drug, but after a positive phase 3 trial it becomes a drug.
Answer: A vaccine works by flowing in your blood and getting rid of the toxic or bad germs in your body.
Explanation:
They help to prevent the disease from occurring. The immune system becomes familiar with the pathogen and learns how to fight it. Its the same process with vaccines
Anemia is a condition in which you lack enough healthy red blood cells to carry adequate oxygen to your body's tissues. Having anemia can make you feel tired and weak. There are many forms of anemia, each with its own cause. Anemia can be temporary or long term, and it can range from mild to severe
