A study design is a plan specification comprised of protocols (which may specify how and what kinds of data will be gathered) that are executed as part of an investigation and is realized during a study design execution. study design A network server is one example. Medical schools and research laboratories can list professional equipment, such as microscopes. A physical object provided for specific purpose, task or occupation. server; Bruker Vector-33 FT-IR Phase 0 Clinical Trial Phase 0 is a recent designation for exploratory, first-in-human trials conducted in accordance with the United States Food and Drug Administration's (FDA) 2006 Guidance on Exploratory Investigational New Drug (IND) Studies. Phase 0 trials are also known as human microdosing studies and are designed to speed up the development of promising drugs or imaging agents by establishing very early on whether the drug or agent behaves in human subjects as was expected from preclinical studies. In Phase I trials, researchers test an experimental drug or treatment in a small group of people (20-80) for the first time to evaluate its safety, determine a safe dosage range, and identify side effects Phase 1 Clinical Trial In Phase 2 trials, an experimental study drug or treatment is given to a larger group of people (100-300) to see if it is effective and to further evaluate its safety. Phase 2 Clinical Trial In Phase 3 trials, an experimental study drug or treatment is given to large groups of people (1,000-3,000) to confirm its effectiveness, monitor side effects, compare it to commonly used treatments, and collect information that will allow the experimental drug or treatment to be used safely. Phase 3 Clinical Trial In Phase 4 trials, post marketing studies delineate additional information including the drug's or treatment's risks, benefits, and optimal use. Phase 4 Clinical Trial