NTSR1 and male infertility: Additionally, MTZ was able to induce male infertility by targeted germ cells ablation in the testes of Tg(asp:GPF-NTR), Tg(sam:GPF-NTR) and Tg(odf:GPF-NTR) transgenic background zebrafish (Figure 1D) (Hsu et al., 2010).