Fig. 1.

Immunohistochemical ALCAM staining of frozen human tumour tissue biopsies. Positive staining (a) was observed in 46 of 52 representative breast tumour samples, in all prostate tumour samples, and in 11 of 13 ovarian tumour samples. In b examples of positive staining of breast (i), prostate (ii) and ovarian (iii) tumour tissue are shown. IHC staining was scored on a scale from 0 to 3+ where 0 was no staining and grades 1+ to 3+ represented increasing staining