Petri dish
Petri Dish
A Petri dish (pronounced: /ˈpiːtri/), also known as a Petri plate or cell-culture dish, is a shallow cylindrical glass or plastic lidded dish that biologists and chemists use to culture cells, such as bacteria, fungi or small mosses.
Etymology
The Petri dish is named after the German bacteriologist Julius Richard Petri, who invented it in 1887 when working as an assistant to Robert Koch.
Usage
Petri dishes are often used in microbiology for the culture of microorganisms. By spreading a liquid sample across the surface of the dish, scientists can observe the growth and characteristics of colonies of bacteria or fungi. This can be useful in identifying and studying these organisms.
In addition to microbiology, Petri dishes are also used in the fields of cell biology, molecular biology, and biochemistry for various experiments and procedures.
Related Terms
- Agar: A gelatinous substance derived from seaweed, commonly used as a culture medium in Petri dishes.
- Colony (biology): A visible mass of microorganisms all originating from a single mother cell, generally bacteria or yeast.
- Inoculation: The process of introducing an antigenic substance or vaccine into the body to trigger immune response.
- Sterilization (microbiology): The process of eliminating all forms of life, including transmissible agents such as fungi, bacteria, viruses, spore forms, etc. from a surface, a piece of equipment, food, or biological culture medium.
External links
- Medical encyclopedia article on Petri dish
- Wikipedia's article - Petri dish
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