Certain reducible compounds are useful in {TAIL ~ analytical compositions}, elements and methods, e.g. for {HEAD ~ assays} of bacterial cells 
Certain reducible compounds are useful in { TAIL ~ analytical compositions } , elements and methods , e.g. for { HEAD ~ assays } of bacterial cells
OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD OTH OTH OTH