Columbia subject headings:
B cells--Congresses.
Cell interaction--Congresses.
Cellular recognition--Congresses.
T cells--Congresses.
Harvard subject headings:
B cells--Congresses.
Cell interaction--Congresses.
Cellular recognition--Congresses.
T cells--Congresses.
Princeton subject headings:
B cells--Congresses.
Cell interaction--Congresses.
Cellular recognition--Congresses.
T cells--Congresses.