The problem with writing about history is that developments appear inevitable and indeed when we present a chronological account this must be the case. However, it is as well to remember that at each point in the story the outcome could have been different.
The advances in medicine in the twentieth and twenty-first centuries are the result of the demonstration of the validity of the germ theory in the nineteenth century and most significantly the establishment of its functional utility. It is easy to forget how recent these advances are. In 1922, Topley succeeded Sheridan Dele´pine in the Bacteriology Department of the University of Manchester. Dele´pine had worked with Pasteur. This was a world before molecular biology, before most immunology, and at the beginnings of antimicrobial chemotherapy. Here, some of the advances are documented, but the choice of what to include is determined by the concerns of the present and the recent past and may not reflect fully the concerns and priorities of the past.
MICROBIOLOGY Microbiology is the study of living organisms (âmicroorganismsâ or âmicrobesâ), simple in structure, and usually small in size, that are generally considered to be neither plants nor animals; they include bacteria, algae, fungi, protozoa, and viruses. âPureâ microbiology concerns the organisms themselves and âappliedâ microbiology their effects on other living beings, when they act as pathogens or commensals, or on their inanimate environment, when they bring about chemical changes in it. Thus, microbiology has applications in human and veterinary medicine, in agriculture and animal husbandry, and in industrial technology and even climatology. Microorganisms were first seen and described by the Dutch lens-maker Antonie van Leeuwenhoek (1632â 1723), who devised simple microscopes capable of giving magnifications of c. 200. In a number of letters to the Royal Society of London between 1673 and his death, he gave clear and accurate descriptions and drawings of a variety of living things that undoubtedly included protozoa, yeasts, and bacteria (Dobell 1932). These striking observations did not lead immediately to great advances in the knowledge of microbes. These were delayed for nearly two centuries, until essential technical advances had been made by workers who nowadays would be described as industrial or medical microbiologists.
Please wait ! Your download will begin in 10Â Seconds
If your Download don't Start after above mentioned time then kindly Refresh the Page OR use Laptop/PC to Download.
Disclaimer:
This site complies with DMCA Digital Copyright Laws. Please bear in mind that we do not own copyrights to this book/software. We are not hosting any copyrighted contents on our servers, itâs a catalog of links that already found on the internet. Usmlebookspdf.com doesnât have any material hosted on the server of this page, only links to books that are taken from other sites on the web are published and these links are unrelated to the book server. Moreover Usmlebookspdf.com server does not store any type of book, guide, software, or images. No illegal copies are made or any copyright  Âİ and / or copyright is damaged or infringed since all material is free on the internet. Check out our DMCA Policy. If you feel that we have violated your copyrights, then please contact us immediately. Weâre sharing this with our audience ONLY for educational purpose and we highly encourage our visitors to purchase original licensed software/Books. If someone with copyrights wants us to remove this software/Book, please contact us. immediately.
You may send an email to [email protected] for all DMCA / Removal Requests.