Fig. 1From: Application of 3D printing to prototype and develop novel plant tissue culture systemsA typical tissue culture room shelf (120 × 60 × 40 cm) with two florescent bulbs on a ballast at the center of the shelf (a), Heat map of light fluence rate (b). Each square represents a 10 cm2 area measured from the center with a light meter 31 cm from the lightBack to article page