Robot: May I help you? Small person: Oh,I see the wall outside the door is engraved with antibody bank four big words,feel puzzled, want to come in and have a look!
Then, robot handed the antibody bank card to the little man,the little man happy to go out.
Well, we are just taking advantage of the treasure trove of the body's own immune system, which has antibodies against foreign pathogens and endogenous ones that damage aging and cancer cells.