6.5.1.3	additional information	calcium, cobalt, copper, cadmium, nickel, and zinc are ineffective	749277	
6.5.1.3	additional information	no detectable activity with Ca2+, Sr2+, Ba2+, Zn2+, Co2+, Cd2+, Pb2+, Co(NH3)6 3+, or spermine	650172