Carbon-13 analysis of cholesterol preserved in archaeological bones and teeth. By using genetically engineered bacteria, scientists have produced a large amount of smell receptor and matched it to the odors it detects. G.D. Prestwich, and H. Breer. Synthetic membranes smell and taste. Amato, I. 1989.
Molecular custodians sweep away odorants.
Pennisi, E. 1993. Nose nerve cells show transplant potential. Nesting with the enemy Savannah sparrows nesting on an Atlantic island use predatory gulls as scarecrows. Wheelwright, N.T., Lawler, J.L., and Weinstein, J.H. 1997. W.P. Stubbs, et al. 1996.