Fig. 5. Cytological characterization of primary spermatocyte nuclei of Drosophila hydei using Jel318 and Jel466 antibodies. Both antibodies specifically recognize the pseudonucleolus and clubs loops formed by the Y chromosome of D. hydei. Note that Jel318 and Jel466 immunostainings are comparable. No trypsin pre-treatment has been performed on slides incubated with Jel318.