Columbia subject headings:
Biological products--Congresses.
Cancer cells--Congresses.
Human cell culture--Congresses.
Vaccines--Congresses.
Harvard subject headings:
Biological products--Congresses
Cancer cells--Congresses
Human cell culture--Congresses.
Vaccines--Congresses
Princeton subject headings:
Biological products--Congresses.
Cancer cells--Congresses.
Human cell culture--Congresses.
Vaccines--Congresses.