Light-Emitting Diodes (LEDs): An Artificial Lighting Source for Biological Studies

Light-emitting diodes (LEDs) have been demonstrated to be a artificial flexible lighting source which has significant effects on biological processes. LEDs are not only the solution for biological studies but also for health caring projects. Numerous studies have been conducted in order to investigate the effects of LEDs on plants such as elongation, axillary shoot formation, leaf anatomy, and rhizogenesis as well as on animals such as cellular proliferation, collagen synthesis, growth factor metabolism in cells, cell growth enhancement, and cancer treatment. These studies have lead to many satisfactory results. The use of LEDs has a wide range of applications, such as a radiation source for plant production, investigations on animal nerve system and cell growth, and other applications for fishery and creative nature photographing, etc.