ystematicsSynthetic biologyXenobiologySystems biologyTaxonomyTeratologyToxicologyවෛරසවේදයVirophysicsZoologySee alsoHistory of biologyNobel Prize in Physiology or MedicineTimeline of biology and organic chemistryvteක්‍ෂුද්‍රජීවවේදය: බැක්ටීරියාවෛද්‍යක්‍ෂුද්‍රජීවවේදයInfectionExotoxinLysogenic cyclePathogenic bacteriaරෝගජනක බැක්ටීරියාප්‍රතිරෝධයBiochemistryand ecologyOxygenpreferenceසවායුObligateනිරිවායුFacultativeObligateMicroaerophileNanaerobeAerotolerantOtherExtremophileHuman flora GutLungMouthසමVaginal (In pregnancy)PlacentalUterine SalivaryMicrobial metabolismNitrogen fixationMicrobial ecologyPrimary nutritional groupsSubstrate preferenceLipophilicSaccharophilicShapeBacterial cellular morphologiescell structureplasticityCocciBacilliCoccobacilliSpiralStructureCellenvelopeCell membraneCell wall: PeptidoglycanNAMNAGDAPGram-positive bacteria only: Teichoic acidLipoteichoic acidEndosporeGram-negative bacteria only: Bacterial o