for all the cations investigated ( mg2+ , tb3+ , co ( nh3 ) 6 ( 3+ ) , spermidine spd2+ and spermine sp4+ ) condensation of ce chromatin occurred before the onset of aggregation , while aggregation of ct chromatin started before condensation with all cations except mg2+ and tb3+ .
C0037871
spd2
C0037874
sp4