Table 3.

List of phylum, class, order, family, genus and gram classifications in bacteria for which researchers have obtained different results in healthy and hypertensive populations.

Phylum	Class	Order	Family	Genus	Gram Classification	Presence in Hypertension
Firmicutes	Clostridia	Clostridiales	Ruminococcaceae	Oscillibacter	Positive	Higher [21]/Lower [17]
Bacteroidetes	Bacteroidia	Bacteroidales	Prevotellaceae	Prevotella	Negative	Higher [17,20,23]/Lower [20]
Bacteroidetes	Bacteroidia	Bacteroidales	Bacteroidaceae	Bacteroides	Negative	Higher [21]/Lower [18]
Firmicutes	Clostridia	Clostridiales	Clostridiaceae	Clostridium	Positive	Higher [17,20,23]/Lower [20]