{HEAD ~ The method} includes inactivating endogenous enzyme activities using neutral organic solvents in {TAIL ~ conjunction} with a matrix having minimal background noise  
{ HEAD ~ The method } includes inactivating endogenous enzyme activities using neutral organic solvents in { TAIL ~ conjunction } with a matrix having minimal background noise
HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH