Columbia subject headings:
Harvard subject headings:
Conference papers and proceedings
Immune response--Congresses
Lymphocytes--Congresses
Macrophages--Congresses.
Reticulo-endothelial system--Congresses.
Princeton subject headings:
Immune response--Congresses.
Lymphocytes--Congresses.
Macrophages--Congresses.
Reticulo-endothelial system--Congresses.