So, W.V., Rosbash, M., and Hall, J.C. 1998. Balsalobre, A., Damiola, F., and Schibler, U. 1998. A serum shock induces circadian gene expression in mammalian tissue culture cells. Gekakis, N. et al. 1998. Herzog, E.D., Takahashi, J.S., and Block, G.D. 1998.
Clock controls circadian period in isolated suprachiasmatic nucleus neurons.
Katzenberg, D. et al. Stanewsky, R. et al. 1998. The cryb mutation identifies cryptochrome as a circadian photoreceptor in Drosophila . Weaver, D.R. 1998. Dunlap, J.C. 1999.