Fig. 6
From: Microcrack propagation in transverse surface from heartwood to sapwood during drying
Comparison of the locations, where microcracks appeared, using the CLSM and digital microscope. The image on the left shows the entire area of the specimen. The images in the middle and right are acquired from the bottom (CLSM) and top views (digital microscope) of the same specimen. The white and black arrow heads indicate the microcrack locations in heartwood and sapwood. The asterisk indicates their first appearance in heartwood