Columbia subject headings:
Abnormalities, Human--Diagnosis--Congresses.
Epithelium--Congresses.
Epithelium--Diseases--Congresses.
Tissue culture--Congresses.
Harvard subject headings:
Abnormalities, Human--Diagnosis--Congresses.
Epithelium--Congresses.
Epithelium--Diseases--Congresses.
Tissue culture--Congresses
Princeton subject headings:
Abnormalities, Human--Diagnosis--Congresses.
Epithelium--Congresses.
Epithelium--Diseases--Congresses.
Tissue culture--Congresses.