Humic acid is a compound formed by microbial decomposition of plant and animal remains and is widely found in mountains, rivers and lakes.Humic acid enhances the degradation of pyrene by Mycobacterium smegmatis NJS-1.

5-ROX, a rhodamine dye, exhibits strong fluorescence property in aqueous buffer with the λexit of 580 nm (ε=3.6×10^4/(M·cm)), and λemit of 604 nm (?=0.94).

Melanin Concentrating Hormone (MCH), a 19 amino acid cyclic peptide, is largely expressed in the hypothalamus.