Color representation of changes of ectonucleotidase expression in the eutopic and ectopic endometrial tissue in endometriosis in comparison to the endometria of women without endometriosis. De novo, in red, indicates that this is the first time the label is detected in this cell type; unmodified; in yellow, indicates no changes in label between endometriosis and non-endometriosis; reduced, in green, indicates that the label is diminished in the endometriosis condition; loss of expression, in blue, indicates lack of expression in endometriosis; not expressed indicates that the label is never reported in this particular cell type in any condition.