The oligodynamic metal used in accordance with the invention is typically {TAIL ~ a heavy metal} such as {HEAD ~ copper}, silver, gold or their alloys including intermetallic compounds thereof 
The oligodynamic metal used in accordance with the invention is typically { TAIL ~ a heavy metal } such as { HEAD ~ copper } , silver , gold or their alloys including intermetallic compounds thereof
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH