PLA2G2A and neoplasm: Since prostaglandin biosynthesis is initiated by PLA2 acting on membrane phospholipids, we examined its expression using public available expression array data sets from pulmonary LAM nodule cells collected by laser-capture microdissection (GEO data set GSE12027) [27], lung cancer/tumor (GEO data set GSE10072 and GSE19804) [25], [34], and control lungs (GEO data set GSE10072 and GSE19804) [25], [34] (Figure 1A).