Germ-Free LifeFungiBacteriaNeoplasms, Germ Cell and EmbryonalQuality of LifeMitosporic FungiGram-Negative BacteriaWheat Germ AgglutininsMolecular Sequence DataGram-Positive BacteriaImmune SystemBacteria, AnaerobicTestisPhylogenySpermatogenesisGerm LayersAscomycotaTooth GermAmino Acid SequenceBacterial ProteinsRNA, Ribosomal, 16STesticular NeoplasmsSequence Analysis, DNABase SequenceDNA, BacterialBacteria, AerobicEscherichia coliSpermatozoaDNA, RibosomalBasidiomycotaImmune ToleranceSymbiosisImmunity, InnateSoil MicrobiologyGerminomaSpecies SpecificitySpermatogoniaSertoli CellsSpores, FungalMice, Inbred C57BLSeminiferous TubulesCulture MediaMutationWater MicrobiologyGonadsAnti-Bacterial AgentsTime FactorsSpermatocytesLifeFree RadicalsColony Count, MicrobialSpermatidsBacterial Physiological PhenomenaPlant DiseasesMice, Inbred BALB C