Isolation and characterization of Df(2L)BSC37 Jennifer Deal, Megan Deal-Herr and Kevin Cook Bloomington Drosophila Stock Center, Indiana University Df(2L)BSC37 was isolated as a P transposase-induced male recombination event involving P{PZ}aop03953a and P{EP}EP2232. The deletion was isolated as a net+-cn+ recombinant chromosome from the cross net1 b1 cn1 sp1 females x P{PZ}aop03953a cn1/net1 P{EP}EP2232; TMS, P{Delta2-3}99B/+ males. The deficiency chromosome retains the miniwhite marker from P{EP}EP2232. Polytene chromosome squashes showed the breakpoints 22D1-3;22F1-2 (distal break between 22D1 and the 22D3,4 doublet; proximal break within the 22F1,2 doublet). Df(2L)BSC37 failed to complement Rab5k08232.