Tissue isoantigens A, B and H in primary carcinoma of the pancreas

Table 1 Type and differentiation degree of 26 cases of primary carcinoma of the pancreas

Type	Acinar cell carcinoma	Adeno-carcinoma	Undifferentiated carcinoma	Adenoa-canthoma	Total
Well differentiated	1	6		1	8
Moderately differentiated	1	12			13
Poorly differentiated		4	1
Total	2	22	1	1	26

Table 2 The frequency of ABH positive cells in 26 normal pancreatic ducts and in ducts of 22 adenocarcinoma

Frequency of ABH positive cells	4/4	3/4	2/4	1/4	< 1/4	0	Total
Normal pancreatic ducts	10	5	4	3	2	2	26
Adenocarcinoma (cases)
Well differentiated	4	1	1				6
Moderately differentiated	5	3	2	2			12
Poorly differentiated	1	1	2				4

Note: 4/4 indicates that the epithelial cells of the whole circumference of duct were ABH positive, and others were analyzed in this way.

Table 3 Comparison of the staining intensity of ABH positive cells in primary foci and in the invasive carcinoma

Intensity of ABH positive staining of cells in		Cases (n = 11)
Primary foci	Invasive carcinoma
+-+++	0	7
+-+++	0-++	3
++-+++	0-+	1

Table 4 The localization of ABH antigens in 26 normal pancreatic cells and in 26 ducts of adenocarcinoma

Localization of ABH antigens on cell	Whole cytoplasm	Infranuclear region	Supranuclear region	brush border	Secretion
Normal ducts	6	11	11	24	24
Well differentiated	10	12	15	18	8
Moderately differentiated	5	8	14	14	8