Petri dish with diverse, colorful, and differently-sized viruses suspended in liquid.
描述
A petri dish is a shallow cylindrical glass or plastic container used to hold and grow microorganisms or cells. The image shows a group of viruses in petri dishes. The viruses are of different colors and shapes. Some of them are round, while others are oval or rod-shaped. The viruses are also of different sizes. Some of them are very small, while others are quite large. The viruses are suspended in a liquid that is contained in the petri dish. The liquid is clear, so that the viruses can be easily seen. The petri dish is placed on a black background, so that the viruses stand out.
