Penicillin was discovered in 1928 by Scottish scientist Alexander Fleming. People began using it to treat infections in 1942. There are several enhanced penicillin families which are effective against additional bacteria; these include the antistaphylococcal penicillins, aminopenicillins and the antipseudomonal penicillins. They are derived from "Penicillium" fungi. The term "penicillin" is often used generically to refer to benzylpenicillin (penicillin G, the original penicillin found in 1928), procaine benzylpenicillin (procaine penicillin), benzathine benzylpenicillin (benzathine penicillin), and phenoxymethylpenicillin (penicillin V). Procaine penicillin and benzathine penicillin have the same antibacterial activity as benzylpenicillin but act for a longer period of time. Phenoxymethylpenicillin is less
Uncle Valentine noise from works being done on the newly purchased house, jarring the ambience and atmosphere of the rural place. Uncle Valentine Uncle Valentine is a short story by Willa Cather. It was first published in "Woman's Home Companion" in February 1925. A music teacher is giving a lesson to an American girl, who says she has been practising songs by Valentine Ramsay. The teacher says another lady in the room can tell her more about him. Marjorie explains Valentine was her uncle. One day, her Aunt Charlotte is getting ready for her brother to come back after leaving for Europe