👉 Spermophilus is a genus of bacteria in the family Bacteroidetes. It belongs to the order Firmicutes and has been classified as a gram-negative, rod-shaped bacterium. Spermophilus is characterized by its large, flat cells with an outer membrane that is often yellow or orange-brown. The cell wall is composed of cellulose and is primarily composed of lignin. Spermophilus is found in the human gut, where it plays a crucial role in nutrient