Fig. 6From: Identification of developmental stage and anatomical fraction contributions to cell wall recalcitrance in switchgrassCell wall autofluorescence cross-sections of NaOH-pretreated switchgrass anatomical fractions from internodes I2, I3, and I4. Confocal laser scanning microscopy carried out using an overlay of laser excitation wavelengths of 405 and 543 nm. Scale bars represent 200 µmBack to article page