Columbia subject headings:
DNA--Synthesis--Congresses.
Enzymes--Congresses.
Proteins--Congresses.
Harvard subject headings:
DNA replication--Congresses.
DNA--Synthesis--Congresses.
Enzymes--Congresses.
Proteins--Congresses
Princeton subject headings:
DNA replication--Congresses.
Enzymes--Congresses.
Proteins--Congresses.