 
 <prompt> ```Wen di informate dey witeld? Based on di previus kweshon, write one context wey get di ansa. E fit be 1 - 20 sentenses. Context:``` <response>: In 1939, wen World War II start, Rene Dubos report say dem discover di first antibiotic wey come from nature, tyrothricin, na compound of 20% gramicidin and 80% tyrocidine, from B. brevis. E be one of di first antibiotics wey dem dey produce for market and e dey very effective for treating wounds and ulcers during World War II. But gramicidin no fit dey use for body because e dey toxic. Tyrocidine sef too toxic for body. Di research wey dem get during dat time no dey share between di Axis and di Allied powers during di war. 