Answer:
the vaccine causes the immune system to produce antibodies to the virus that causes the measles
This invention was a commercial failure. Edison resolved that in the future he would only invent things that he was certain the public would want. ... This gave Edison the money he needed to set up his first small laboratory and manufacturing facility in Newark, New Jersey in 1871.
found at: https://www.nps.gov/edis/learn/historyculture/edison-biography.htm
Atoms. Every element is made of a specific type of atoms.
Doesn’t normally happen until your 40’s or 50’s
