One day in the biology lab, we were observing our own saliva cells, looking through the microscope and recording the results... Just as everyone was excitedly observing and studying, a scream broke the silence...
Ahhh~~~ It turned out to be from the beautiful teaching assistant...
The professor thought something was wrong, so he ran over to take a look. After carefully checking her microscope, he told her: "Next time after you're done, remember to brush your teeth and rinse your mouth!!!"