Briefly describe the methods, advantages and disadvantages of bacterial detection.

Briefly describe the methods, advantages and disadvantages of bacterial detection;

You can directly observe its movement with a microscope. In addition, flagella is the motor organ of bacteria, and the existence of flagella can indirectly judge whether bacteria have motive. The method in memory is as follows:

1. Use a microscope

The activity of bacteria in bacterial liquid can be observed by some special methods with ordinary optical microscope. If possible, you can also use some high-end microscopes, such as phase contrast microscopes.

2. Use semi-solid medium for culture.

Flagellar bacteria can spread and grow along the puncture line, and the periphery of the puncture line will become blurred; Bacteria without flagella can only grow along the puncture line, and the surroundings are clear and transparent.

3. Flagella staining

Dyed with special dyes for easy observation under a microscope.

4. Immunological methods

The existence of bacterial flagella was detected by antigen-antibody reaction.