Representative haematoxylin and eosin (A–D) and
anti-CEA immunohistochemical (E–H) micrographs
demonstrating the effect of CA1P on the distribution of viable cells and
CEA in SW1222 (A, B, E, F) and LS174T
(C, D, G, H) intrahepatic
metastases. Control SW1222 metastases are almost totally viable
(arrow, A), with relatively uniform expression of CEA (arrow,
E). After treatment with CA1P, viable CEA-expressing tumour cells
are restricted to the peripheral rim (arrow, B and F). In
control LS174T metastases (C), CEA expression (arrow, G) is
more heterogeneous than in SW1222 metastases (E). After treatment
with CA1P (D), viable and CEA-expressing tumour cells are similarly
restricted to the peripheral rim (arrows, D and H).