Germ-Free LifeFungiBacteriaQuality of LifeMitosporic FungiGram-Negative BacteriaGram-Positive BacteriaImmune SystemNeoplasms, Germ Cell and EmbryonalMolecular Sequence DataBacteria, AnaerobicPhylogenyAscomycotaRNA, Ribosomal, 16SBacterial ProteinsSequence Analysis, DNADNA, BacterialAmino Acid SequenceBacteria, AerobicWheat Germ AgglutininsEscherichia coliDNA, RibosomalBasidiomycotaBase SequenceImmune ToleranceSymbiosisImmunity, InnateSoil MicrobiologySpecies SpecificityCulture MediaSpores, FungalWater MicrobiologyTestisAnti-Bacterial AgentsMice, Inbred C57BLLifeFree RadicalsSpermatogenesisColony Count, MicrobialBacterial Physiological PhenomenaGerm LayersPlant DiseasesMutation