The chemical structure of prodigiosin has been unveiled.Serratia are capable of thriving in diverse environments, including water, soil, and the digestive tracts of various animals.S marcescens has a predilection for growth on starchy foodstuffs, where the pigmented colonies are easily mistaken for drops of blood.
In the gastrointestinal tract, the submucosa is the layer of dense irregular connective tissue or loose connective tissue that supports the mucosa, as well as joins the mucosa to the bulk of overlying smooth muscle (fibers running circularly within layer of longitudinal muscle).n the gastrointestinal tract, the submucosa is the layer of dense irregular connective tissue or loose connective tissue that supports the mucosa, as well as joins the mucosa to the bulk of overlying smooth muscle (fibers running circularly within layer of longitudinal muscle).
Mucosa: The surface of the stomach is lined by a simple columnar epithelium whose cells are called surface mucous cells. There are numerous invaginations of the surface epithelium into the lamina propria. These invaginations are called gastric pits or foveolae, and are also lined by surface mucous cells.he surface of the stomach is lined by a simple columnar epithelium whose cells are called surface mucous cells. There are numerous invaginations of the surface epithelium into the lamina propria.