JetBlue was incorporated in Delaware in August 1998. JetBlue started by following Southwest's approach of offering low-cost travel, but sought to distinguish itself by its amenities, such as in-flight entertainment, TV at every seat, and Sirius XM satellite radio.
Function. Because the lumen of the gastrointestinal tract is exposed to the external environment, much of it is populated with potentially pathogenic microorganisms. Peyer's patches thus establish their importance in the immune surveillance of the intestinal lumen and in facilitating the generation of the immune response within the mucosa.
Describe the location and function of sebaeous glands. 1  Sebaceous glands are located throughout the skin except in the palms of the hands and soles of the feet. 2  Sebum is an oily substance composed of fat (lipids) and the debris of dead fat-producing cells.  Sebaceous glands are classified as holocrine glands.