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An optical microscope which uses two sets of lenses to gather and magnify light.
The alignment or orientation of opposing properties in a system.
A substance that absorbs light at one wavelength and re-emits the energy as light at another wavelength.
A fluid-filled compartment inside a cell, surrounded by a membrane.
Tiny, hair-like projections from the surface of a cell that wave in unison to cause movement.
A formula that shows the simplest whole number ratio of atoms in a compound.