Neoplasms, Germ Cell and EmbryonalTesticular NeoplasmsGerminomaGerm CellsSeminomaEndodermal Sinus TumorDysgerminomaTeratomaGranulosa Cell TumorCell Line, TumorGiant Cell Tumor of BoneMediastinal NeoplasmsRetroperitoneal NeoplasmsGiant Cell TumorsTumor Markers, BiologicalCarcinoma, EmbryonalTestisGranular Cell TumorSertoli Cell TumorLeydig Cell Tumoralpha-FetoproteinsCisplatinSpermatogenesisBleomycinOvarian NeoplasmsEtoposideTumor BurdenTumor Necrosis Factor-alphaChoriocarcinomaTumor Cells, CulturedMesonephromaNeoplasms, ExperimentalImmunohistochemistryBrain NeoplasmsRetroperitoneal SpaceNeoplasm MetastasisAntineoplastic Combined Chemotherapy ProtocolsGenes, Tumor SuppressorTumor Suppressor Protein p53Seminiferous TubulesWilms TumorNeoplasmsSpermatozoaCombined Modality TherapyIfosfamideRNA, MessengerNeoplasm ProteinsSpermatogoniaCell ProliferationNeoplasms, Gonadal TissueCarcinoid TumorAntigens, NeoplasmOrchiectomySertoli-Leydig Cell TumorSalvage TherapyNeoplasm StagingReverse Transcriptase Polymerase Chain ReactionGonadoblastomaSertoli CellsNeoplasm Recurrence, LocalAntineoplastic AgentsAdenoma, Islet CellDNA, NeoplasmMammary Neoplasms, ExperimentalBone NeoplasmsPinealomaPrognosisTumor Suppressor ProteinsTreatment OutcomeNeuroendocrine TumorsMixed Tumor, MalignantGene Expression Regulation, NeoplasticTeratocarcinomaNeoplasms, Multiple PrimaryTumor MicroenvironmentTransplantation, HeterologousCell DivisionNeovascularization, PathologicAdenocarcinomaMice, NudeChromosomes, Human, Pair 12Molecular Sequence DataRetrospective StudiesTime FactorsMice, Inbred BALB CCell Transformation, NeoplasticApoptosisCarcinoma, Ehrlich TumorMice, Inbred C57BLSignal TransductionBase SequenceMutationXenograft Model Antitumor AssaysProto-Oncogene Proteins c-kitCryptorchidismSpermatocytesChorionic GonadotropinCentral Nervous System NeoplasmsNeoplasm TransplantationFibrosarcoma