Firmicutes Bacillus/Clostridium group Clostridium group firmicutes Firmacutes GC_ID:11 Gram positive bacteria Gram-positive bacteria Low G+C firmicutes NCBITaxon:31968 PMID:10555317 PMID:11034484 PMID:11542017 PMID:15143038 clostridial firmicutes firmicutes low G+C Gram-positive bacteria low GC Gram+ ncbi_taxonomy Bacteria