When a germ enters the body the immune system mounts up an army and defense system to destroy that germ. the body produces to you lock onto the germ also known as antigen

The answer is B-cell

for me i have felt invisible when i was clearly struggling,or,i made a great achievement ,and,nobody took to notice me either because they just didn't see it,or,people just turned their back on me.i can see a person being invisible by choice,or,without choice like i did.the people who are invisible by choice don't try to talk to people,don't try to make friends,and,keep to themselves.i haven't been one of those people so i couldn't give you a reason.

hope this and can i get bainliest my dude : d

70 % i think is the answer.