MICROSCOPIC HOUSE DUST
MICROSCOPIC HOUSE DUST 2
MICROSCOPIC HOUSE DUST 1
MICROSCOPIC GRASS PHYTOLITH OR PLANT STONE
MICROBES ON A CELL PHONE
METALS
METAL STRUCTURE
METAL RUST
MERINO WOOL FIBRE
MAGNETITE GEODE ROCK
LINEN
LINEN FIBER
LIGHT-HARVESTING POLYMERS
LIGHT BULB FILAMENT
LIFE DISCOVERED IN ANTARCTIC GLACIERS
LENS