Here are some pictures that will amaze you too.
Nowadays, due to the corona virus epidemic, everyone is wearing a face mask, everyone must follow SOPs.A mask that protects a person from a dangerous epidemic can protect against many germs.
However, Do you know what this mask looks like from the inside?
Doctors often use a microscope to check for bacteria or microorganisms, but a similar experiment was performed to find out what is inside the face mask.
See microscopic images of different face masks made of fabric:
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