- Development of Phodopus sungorus brown preadipocytes in primary cell culture: effect of an atypical beta-adrenergic agonist, insulin, and triiodothyronine on differentiation, mitochondrial development, and expression of the uncoupling protein UCP. Klaus, S., Cassard-Doulcier, A.M., Ricquier, D. J. Cell Biol. (1991)