The tissues examined included NB (n=19); NB-T (n=18); B (n=8) and T
(n=23), as described in Table 1 and Fig 2. Following staining with MSFspecific
antibody, MSF expression in the epithelium was evaluated according
to: (A) the percentage of area stained, and (B) the final score (product of
area and intensity). Differences among tissues were analysed by Kruskall-
Wallis and unpaired two tailed Mann Whitney tests. No significant differences
were found between NB-T and B. The difference between B and T was
significant for the area stained (p=0.001) and near significant for the epithelial
score (p=0.07). Significant differences were found between all other tissues
(p=0.001-0.0001).