Figure 4From: Enzyme affinity to cell types in wheat straw (Triticum aestivum L.) before and after hydrothermal pretreatmentSEM and AFM. SEM (1) and 2 μm2 AFM (2) images of raw wheat stems (A, cavity; B, rind) and leaves (C). On the AFM images, note the surface of microfibrils on the stem cavity and the lumpy ridges interpreted as cutin and epicuticular waxes partly on the stem rind and on the leaves.Back to article page