Ethel Viviana (asker) Nov 13, 2010:

Dear Joel,

Thanks for your explanations, but as you may know, words in isolation may have little to do with their meaning in an expression or in a certain context. I obviously looked up the word "scavenge", but none of the meanings helped me find something suitable in Spanish. I agree with sirwalter.

Joel Pina Diaz Nov 10, 2010:

scavenge [ˈskævɪndʒ]
vb
1. to search for (anything usable) among discarded (collected) material
2. (Engineering / Metallurgy) (tr) to purify (a molten metal) by bubbling a suitable gas through it. The gas may be inert or may react with the impurities
3. to clean up filth from (streets, etc.)
4. (Chemistry) Chem to act as a scavenger for (atoms, molecules, ions, radicals, etc.)

Probably means ¨separate gas or solid from blood? as in Muestra sanguínea centrifugada...
Just guessing...