Stamp 5 chalky paper
39 steps 0.3 microns apart
cross-polarized light interacts with birefringent material with radial symmetry to produce cross pattern
The pits allow water to pass easily while limiting the spread of pathogens and blockages (Choat et al 2007).
17 July 2018 DIC unstained Nikon Ni-E, Nikon DS-Ri2 ©Lin Yangchen
nikon ds ri2nikon ni emicroscopyphotomicrographplant fibrepaperfibre analysisanalytical philatelymalayasmall heads issuepostage stampDICnomarskide la ruechalky paper