Figure 4From: Changes in glycoprotein expression between primary breast tumour and synchronous lymph node metastases or asynchronous distant metastasesPrincipal component analysis shows the degree of relationship between the primary tumour and the corresponding paired metastasis. (a). Principal Component Analysis of primary and lymph node metastasis pairs. A circle indicates a primary tumour and a triangle the lymph node metastasis. (b). Principal Component Analysis of primary and distant metastasis pairs. A circle indicates a primary tumour and a triangle the distant metastasis.Back to article page