&&
1
G
DDT DDTdichoro diphenyl trichloroethane 1971 DDT
20
DNA RNA DNA RNA RNA RNA DNA mrna RNA trna RNA rrna RNA
14C CO2 14C 14C 14C 5730 14C
DNA RNA RNA RNA DNA DNA RNA
PN
DNARNA RNA RNADNA RNA DNA RNA DNA
36
TRH
B B F
DNA DNA DNA
1975 2 DNA 1979 1991 1
HLA H-2
HOMO LUMO HOMO LUMO
&&
DNA DNA DNA DNA
DNA DNA DNA DNA
G 21