Testicular NeoplasmsTesticular DiseasesDysgerminomaSeminomaGerm CellsNeoplasms, Germ Cell and EmbryonalTestisSpermatogenesisGerminomaSpermatozoaSertoli CellsSeminiferous TubulesSpermatogoniaSpermatocytesSpermatidsGonadsMeiosisPancreatic NeoplasmsNeoplasmsWheat Germ AgglutininsSeminiferous EpitheliumOogenesisOvaryTeratomaGerm LayersImmunohistochemistryGene Expression Regulation, DevelopmentalNeoplasms, Cystic, Mucinous, and SerousGametogenesisEndodermal Sinus Tumor