Beside plutonium and radioactive isotopes, she carried a general cargo of the sort of luxury-goods unique to Beowulf which could always find a market in interstellar trade.
"Space Viking"
Henry Beam Piper
He took only the outer hide, which was dry and which held the great iridescent scales that formed isotopes after death.
"The Wealth of Echindul"
Noel Miller Loomis
With these tools, researchers were not long in accurately identifying the missing elements 43, 61, 85, and 87 and more-indeed, the list of new elements, isotopes, and particles now seems endless.
"A Brief History of Element Discovery, Synthesis, and Analysis"
Glen W. Watson