*2.1. Lighting System Features*

The Artificial Lighting Laboratory (LIA) at Instituto Tecnológico de Pabellón de Arteaga in Aguascalientes, Mexico, developed the lighting system. An array of eight lamps formed the artificial lighting system. The wattage of each lamp was 25 watts. The ultra-bright LEDs emitted continuous and pulsed irradiation with different qualities (red, blue, green, and white). A programmed controller (a field-programmable gate array (FPGA)) allowed us to configure functions such as pulse frequency, duty cycle, intensity, wavelength, and on–off time.
