What African American invent penicillan?

The discovery of penicillin is primarily credited to Alexander Fleming, a Scottish bacteriologist, in 1928. However, an African American scientist named Dr. Alice Ball developed the "Ball Method" in the early 20th century, which was the first effective treatment for leprosy using chaulmoogra oil, and she significantly contributed to the field of medicinal chemistry. Though she did not invent penicillin, her work in pharmaceuticals paved the way for advancements in medicine.