A chemical compound used as a contrast medium in medical imaging, particularly in X-ray imaging of the gastrointestinal tract.

The protective outer covering of the stem and branches of trees and shrubs, composed of several layers of tissue.

A device used for maintaining or regulating air pressure in certain medical or research applications.

Relating to the movement of organisms in response to changes in atmospheric pressure.

The movement of an organism in response to changes in atmospheric pressure.

A type of granule found in certain white blood cells that stains with a blue dye in laboratory preparations.

A type of white blood cell responsible for producing antibodies as part of the immune response.

The layer of soil located below the A horizon, often consisting of clay and minerals leached from the upper layers.

Rod-shaped bacteria, which can be either pathogenic or non-pathogenic.

Describes a shape resembling a rod or bacillus.