Bead
Bead (Medicine)
Bead (pronounced: /bi:d/) is a term used in various contexts within the field of medicine.
Etymology
The term "bead" originates from the Old English word "bed", which means prayer. In the medical context, it is used metaphorically to describe objects or phenomena that resemble the shape or arrangement of prayer beads.
Definition
In medicine, a bead often refers to a small, usually round object. It can be made of various materials, including glass, plastic, or metal, and is used in several medical applications.
Applications
Drug Delivery
In Pharmacology, beads are often used in controlled-release Drug Delivery Systems. These systems use beads to encapsulate a drug, allowing it to be released slowly over time. This can help maintain a consistent level of the drug in the patient's system, reducing the need for frequent dosing.
Surgery
In Surgery, beads can be used as spacers or markers. For example, in Radiosurgery, small beads of a radiopaque material can be implanted in or around a tumor to help guide the surgeon during the procedure.
Laboratory Research
In Biomedical Research, beads are often used in assays and other laboratory procedures. For example, in Immunology, beads coated with specific antigens can be used to isolate and study specific types of immune cells.
Related Terms
External links
- Medical encyclopedia article on Bead
- Wikipedia's article - Bead
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