Penicillin nontoxic in humans by first performing toxicity tests in animals and then on humans. His subsequent experiments on penicillin's response to heat and pH allowed Fleming to increase the stability of the compound. The one test that modern scientists would find missing from his work was the test of penicillin on an infected animal, the results of which would likely have sparked great interest in penicillin and sped its development by almost a decade. The importance of his work has been recognized by the placement of an International Historic Chemical Landmark at the Alexander Fleming Laboratory Museum in London on
Penicillin on Wax 34 on the Top R&B/Hip-Hop Albums chart, number 4 on the Heatseekers Albums chart. The lyrical insults were arguably the opening salvo in what would later become the East Coast versus West Coast hip hop conflict which would ultimately lead to the "beef" between Bad Boy Records and Death Row Records. Penicillin on Wax Penicillin on Wax is the debut studio album by American New York-based rapper Tim Dog. It was released on November 12, 1991 via Ruffhouse Records. Production was handled by several record producers, including Ced-Gee, TR Love and Moe Love from Ultramagnetic MC's, Bobby Crawford, Louis Flores,