Final answer:
The National Cancer Institute supports and conducts clinical trials for cancer prevention and detection strategies.
Step-by-step explanation:
The National Cancer Institute (NCI) plays a crucial role in cancer prevention clinical trials.
The NCI supports and conducts research to develop new cancer prevention strategies and interventions. Clinical trials are a key component of this research. They test new approaches to prevent cancer or detect it at an early stage.
For example, the NCI's Early Detection Research Network and Clinical Proteomic Technologies for Cancer are programs designed to identify specific protein signatures related to different types of cancers. These programs aim to improve the detection and treatment of cancer through early diagnosis.