SAMN31841128 Methanosphaera massiliense sp. nov Microbe sample from Candidatus Methanosphaera massiliense Candidatus Methanosphaera massiliense Nimes University Hospital Madjid Morsli Microbe, viral or environmental Microbe.1.0 Vir-13MRS Homo sapiens healthy human feces sample 2022 France Stool reference strain of Candidatus Methanosphaera massiliense 904369