In pharmacology experiments, there are many factors affecting the experimental results, some of which can be controlled, while some are difficult to control. In order to reduce the influence of multi-factors and difficult-to-control factors, a control group should be set up at the same time in the experiments, and comparisons between the control group and the experimental group should be made to eliminate the influences of various irrelevant factors, to minimize the experimental results and to achieve the purpose of correctly evaluating the effects of drugs. The purpose of this experiment is to observe the effects of different routes of administration on the effects of drugs.

Operation method

comparative law

Principle

In pharmacology experiments, there are many factors affecting the experimental results, some of which can be controlled, and some of which are difficult to control. In order to reduce the influence of multi-factors and difficult-to-control factors, a control group should be set up at the same time in the experiments, and comparisons between the control group and the experimental group should be made to eliminate the influence of various extraneous factors, so that the experimental results can be minimized as much as possible, and to achieve the purpose of correctly evaluating the effect of the drug.

Materials and Instruments

mice
Magnesium sulfate solution
Syringe

Move

I. Two mice with similar body weight were taken, one was orally instilled with 0.5 ml of 20% magnesium sulfate solution, and the other was injected subcutaneously with an equal amount of magnesium sulfate solution, and were placed in the cages to observe what reactions appeared.

The results were recorded:

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