If pressure from outside the lungs causes atelectasis, your doctor will treat the cause of the pressure. For example, if the cause is a tumor or fluid buildup, your doctor will remove the tumor or fluid. This will allow your lung to fully expand. Atelectasis Caused by a Blockage
Pilus. Definition. noun, plural: pili. (microbiology) Short, filamentous projection on a bacterial cell, used not for motility but for adhering to other bacterial cell (especially for mating) or to animal cells. Supplement. Bacterial pili are involved in cell adhesion.
Pili-these allow bacteria to adhere to each other and to surfaces. They are hollow structures with an adhesive tip. Plasma membrane-composed of phospholipids and proteins. Semi-permeable and determines what comes in and what goes out of the cell. It is also involved in the replication of DNA.