Persistent organic pollutants in the blood of free-ranging sea otters (Enhydra lutris ssp.) in Alaska and California.

Jessup, D.A., Johnson, C.K., Estes, J., Carlson-Bremer, D., Jarman, W.M., Reese, S., Dodd, E., Tinker, M.T. and Ziccardi, M.H.