Microscopic elements: DSemiconductor tech produce 15~30um features 2 Printed spot size is 50~350 um 3 Tissue spot is 200~600 um Macroarrays contain sample spot sizes of about 300 microns or larger microarray are typically less than 200 microns in diameter • Microscopic elements: ①Semiconductor tech produce 15~30μm features ② Printed spot size is 50~350 μm ③ Tissue spot is 200~600 μm Macroarrays contain sample spot sizes of about 300 microns or larger microarray are typically less than 200 microns in diameter