valgusmikroskoopia, mille korral materjali kiiritatakse lainepikkustel, mis ergutavad looduslikke või sisestatud fluorokroome, light microscopy in which the specimen is irradiated at wavelengths which will excite the natural or articificially introduced fluorochromes; an optical filter absorbs the exciting wavelengths but transmits the fluorecent image which can be studied normally