SOAT1 and breast cancer: One of the Jak/Stat ligands, Unpaired, is transcribed in PCs since S2 and in aPCs it induces border cell (BC) fate in a group of 6-8 surrounding FCs (Grammont and Irvine, 2001; Silver and Montell, 2001; Beccari et al., 2002; Behr et al., 2003).