Figure 3From: MT3 melatonin binding site, MT1 and MT2 melatonin receptors are present in oocyte, but only MT1 is present in bovine blastocyst produced in vitroImmunoreactivity patterns of melatonin receptor MT1, MT2 and NQO2 in bovine oocyte. MT1, MT2 melatonin receptors and NQO2 are expressed by the matured oocyte. The upper-left panel shows localized intense MT1 staining suggesting that MT1 is expressed by polar bodies. The upper-right panel shows a cluster-like distribution of MT2 throughout the matured oocyte. The bottom-left panel shows a diffuse expression of NQO2 enzyme, and the bottom-right shows the negative control. (Scale bar, 30 μm).Back to article page