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).
The submucosa is a layer of dense connective tissue. It contains blood and lymph vessels, and is infiltrated by lymphoid cells, mast cells and macrophages. The muscle layer (muscularis) is composed of smooth muscle fibers. The fibers are oriented in three main directions. The external layer is longitudinal, the middle layer is circular and the internal layer is oblique. The serosa , a thin layer of serous membrane, is the outermost layer of stomach wall.