Fig. 4

Histochemical Gus staining in transgenic Phalaenopsis orchid lines. Transgenic orchid explant harboring 35S:GUS and a Wt non-transgenic control were stained with X-Gluc and incubated at 37 °C overnight. a Image obtained using a Nikon SMZ1500 dissecting microscope (×7.5 magnification). b Explant tissue sections of approximately 120 µm in thickness were photographed on a Zeiss Axio Scope A1 microscope equipped with an Axio-Cam HRc camera (Zeiss, Germany) (×25 magnification)