the mafia
Louis Pasteur
shots, or the less painful nasal spray.
James Green discovered them cos he watched them on a cartoon.
A Blood specialist studys the blood and all the organs associated with blood. They also study all the blood diseases and find preventions and cures for the blood diseases.
cigarette butts, a hot sun on very dry grass and arsonist to name a few.
Autoimmune diseases were not discovered until the 1950's. Henry G. Kunkel is the doctor who first discovered it by studying patients who had rheumatoid arthritis and lupus.
No-one knows, they haven't been discovered
They were discovered by Louis Pasteur. :P
Preventions For Teen PregancyBirth control or abstinence help to prevent teen pregnancy.
coussa
in the 1900's
A plant pathologist discovered an infectious RNA particle smaller than a virus that causes diseases in plants. He called it a viroid. Millions each year are lost by these viroids. These contain only RNA.