Fig. 2 in Distribution of lignans and lignan mono/diglucosides within Ginkgo biloba L. stem

Fig. 2. (a) Optical micrograph, (b) polarized optical micrograph, and (c) UV micrograph of a transverse section of ginkgo. (d) Darkness profiles for cell walls of number of assigned cells in (c). (e) UV absorbance transition in cell walls, evaluated by UV microscopy. CML: compound middle lamella; S1: outer layer of secondary wall; S2: central layer of secondary wall; S3: inner layer of secondary wall.