Analysis of the results (Table 1) showed that: (i) All of the lymph nodes extracted from the G1 patients, expressed detectable levels of transcripts encoding metastatic-associated proteins (such as Vim, MMP2&9, and N-Cadherin) in comparison with a normal lymph sample; (ii) The primary breast tumor assayed in some of these patients (G1) expressed high levels of N-Cadherin; (iii) Almost all of the patients in G2 did not express Vim. Here, MMP2 is linked to breast neoplasm.