Smurfs have “fused” into the asymmetric division of stem cells

References

[1] Besse, F., Busson, D., and Pret, A.M. (2005). Hedgehog signaling controls Soma-Germen interactions during Drosophila ovarian morphogenesis. Dev Dyn 234, 422–431 .16145667
[2] Casanueva, M.O., and Ferguson, E.L. (2004). Germline stem cell number in the Drosophila ovary is regulated by redundant mechanisms that control Dpp signaling. Development 131, 1881–1890 .15105369
[3] Forbes, A.J., Lin, H., Ingham, P.W., and Spradling, A.C. (1996a). hedgehog is required for the proliferation and specification of ovarian somatic cells prior to egg chamber formation in Drosophila. Development 122, 1125–1135 .8620839
[4] Forbes, A.J., Spradling, A.C., Ingham, P.W., and Lin, H. (1996b). The role of segment polarity genes during early oogenesis in Drosophila. Development 122, 3283–3294 .8898240
[5] Narbonne-Reveau, K., Besse, F., Lamour-Isnard, C., Busson, D., and Pret, A.M. (2006). fused regulates germline cyst mitosis and differentiation during Drosophila oogenesis. Mech Dev 123, 197–209 .16516445
[6] Wilson, C.W., Nguyen, C.T., Chen, M.H., Yang, J.H., Gacayan, R., Huang, J., Chen, J.N., and Chuang, P.T. (2009). Fused has evolved divergent roles in vertebrate Hedgehog signalling and motile ciliogenesis. Nature 459, 98–102 .19305393
[7] Xia, L., Jia, S., Huang, S., Wang, H., Zhu, Y., Mu, Y., Kan, L., Zheng, W., Wu, D., Li, X., (2010). The Fused/Smurf complex controls the fate of Drosophila germline stem cells by generating a gradient BMP response. Cell 143, 978–990 .21145463
[8] Xie, T., and Spradling, A.C. (1998). decapentaplegic is essential for the maintenance and division of germline stem cells in the Drosophila ovary. Cell 94, 251–260 .9695953