One hundred years ago, German doctor Paul Ehrlich developed the first effective chemotheraopy drug, Specifically, he was trying to find a cure for syphilis:
Ehrlich and Japanese student Sahachiro Hata produced their 606th preparation of an arsenobenzene compound in 1907. Ehrlich watched on Aug 31 two years later, as Hata injected chemical No. 606 into a rabbit with syphilitic ulcers. The next day, no live spirochetes could be found on the animal's ulcers, and within three weeksm the ulcers were completely gone.
After testing the drug on mice, guinea pigs and many more rabbits, Ehrlich and Hata sent their miracle cure to the chemical firm Hoechst, which marketed it under the name Salvarsan. The drug became an almost instant success around the world, although many criticized Ehrlich for creating a chemical that might encourage promiscuity.
Introduction and Conclusion can cause the biggest problems for your research paper at college or university. You will be surprised, but the research part is not the most difficult one for a lot of students. The biggest problems they face when writing an Introduction and Conclusion. They don't know what can be included and what can't be included in these parts, while keeping a healthy balance between an introduction, body, and conclusion in terms of word count. Read more
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Bike ride is the most elementary form of transport. In earlier days, it was the first human powered vehicle that later transformed the face of automation. The first bicycle appeared around 400 years ago. Slowly innovation and technology shaped the rudimentary bicycle into the modern day road bike that we are so accustomed to see. Read more