These substances are metabolized by the liver. Stimulants elevate the mood, depressants slower down the activity of the brain, and body. Once they are taken inside the body, they reach the specific target organs, act at the site, and the debris is metabolized by the liver and thrown out.
Answer:
1. Development of a fully voluntary blood donation system;
2. Strengthening of a nationally coordinated network of BSF to increase efficiency by centralized testing and processing of blood;
3. Implementation of a quality management system including of Good Manufacturing Practice GMP and Management Information System (MIS)