It has now been found that these metals exert in {HEAD ~ the form} of {TAIL ~ metal ion concentrations} only of the order of about 1×10 6 M a profound bactericidal effect 
of
It has now been found that these metals exert in { HEAD ~ the form } of { TAIL ~ metal ion concentrations } only of the order of about 1×10 6 M a profound bactericidal effect
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH