Ham, from Arnhem, was a medical student in Leiden after 1671. He studied with Prof. Theodore Craanen, who had visited Leeuwenhoek. In 1677, Ham brought ejaculate from a gonorrhoea sufferer to examine under Leeuwenhoek's lens. In it, they found sperm, which Leeuwenhoek reported to the Royal Society in a letter to William Brouckner dated November ...

Jonathan Daniel Hamm (born March 10, 1971) is an American actor. He is best known for his role as Don Draper in the period drama series Mad Men (2007–2015), [1][2] for which he won numerous accolades, including a Primetime Emmy Award and two Golden Globe Awards. [2][3][4]

乔·哈姆（Jon Hamm），1971年3月10日出生于美国密苏里州圣路易斯，美国演员，毕业于密苏里大学表演专业。 1998年，参演个人首部电影《The Hughleys》。 2000年，由其参演的家庭剧《吉尔莫女孩第一季》首播。 2005年，参演的悬疑剧《数字追凶第一季》首播。 2007年，由其主演的年代剧《广告狂人第一季》播出。 2009年，主演了犯罪电影《城中大盗》 [7]。 2010年，主演剧情电影《嚎叫》 [1]。 2012年，主演医疗剧《一位年轻医生的笔记第一季》。 2014年，主演的 …

Jon Hamm is an American actor and producer from St. Louis, Missouri who is known for playing Don Draper in Mad Men. He also played Mister Sinister in a deleted scene of The New Mutants and Legion, Brogan from Shrek Forever After, and other films and shows including Sucker Punch, Million Dollar Arm, Black Mirror and Good Omens. Jimmy Kimmel Live!

The Visit of Johan Ham Three years later, in October 1677, an excited young man knocked on Van Leeuwenhoek’s door. Johan Ham was a 23-year-old student of philosophy in Leiden. It was not his first visit. On the recommendation of his uncle, Theodoor Craanen (Professor of Philosophy and Medicine in Leiden), he had admired a

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1977年10月16日 · [Johan Ham, discoverer of spermatozoa] Clipboard, Search History, and several other advanced features are temporarily unavailable. Skip to main page content An official website of the United States government. Here's how you know. The .gov means it’s official. Federal government websites often end in .gov or .mil. ...

at Leiden, Johan Ham, brought him a specimen ostensibly of semen in which Ham himself had found small animals with tails, which Leeu- wenhoek now observed as well.7 Leeuwenhoek resumed his own

2022年12月30日 · Sperm cells have intrigued biologists since they were first observed nearly 350 years ago by Antonie van Leeuwenhoek and Johan Ham. The discovery of these ‘animalcules’ (i.e., spermatozoa) launched the field of sperm biology, and the subsequent three and half centuries of inquiry into this small, highly specialized cell has revolutionized ...

2008年8月13日 · The Royal Society of London officially credited Leeuwenhoek and his student Johan Ham with the discovery of sperm cells (then called seminal animalcules) in 1677.