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
Valentine Holmes at Hunter Stadium. In November 2018, Valentine Holmes was released from his contract with the Cronulla Sharks in the National Rugby League to chase his dream to one day play in the National Football League. Valentine Holmes Valentine Holmes (born 24 July 1995) is an Australian former professional rugby league footballer who played as a er or for the Cronulla-Sutherland Sharks in the National Rugby League. An Australia international and also a Queensland State of Origin representative, he spent his entire career to date with the Sharks, with whom he won the 2016 NRL Premiership. Holmes was born in Townsville,