Fig. 4From: Effect of a suitable treatment period on the genetic transformation efficiency of the plant leaf disc methodEdU staining was used to identify the number of cells in the S phase of the cell cycle. The EdU fluorescence, chloroplast, bright field, and merge signal of poplar leaves A, poplar stem segments B, and tobacco leaves C after differentiation culture for 1, 2, 3, 4, and 5Â days were observed under a confocal microscopeBack to article page