lecture-27-handouts - 11/29/2011 Practical Bioinformatics...

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11/29/2011 1 Practical Bioinformatics for Life Scientists Week 14, Lecture 27 István Albert Bioinformatics Consulting Center Penn State No homework this week Project to be given out next Thursday (Dec 1 st ) Due following Thursday (Dec 8 th ) Turn in all homework you might have missed (partial credit will be given) Introduction to metagenomics genetic material recovered from environmental samples nothing lives on its own human body is estimated to contain 10 trillion cells the human body contains more bacteria than cells (estimates of 10:1) 100 trillion bacteria! http://xkcd.com/978/
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11/29/2011 2 to the benefits in agriculture, food industry, and medicine to name a few. We humans have more bacterial cells (10 14 ) inhabiting our body than our own cells (10 13 ) [2] , [3] . It has been stated I got intrigued! So what is the real number? How many cells are there in the human body? Wooley JC, Godzik A, Friedberg I, 2010 A Primer on Metagenomics . PLoS Comput Biol 6(2): e1000667. doi:10.1371/journal.pcbi.1000667 it says The citation are [2] Savage DC ( 1977 ) Microbial ecology of the gastrointestinal tract. Annu Rev Microbiol 31: 107 133 [3] Berg R ( 1996 ) The indigenous gastrointestinal microflora. Trends Microbiol 4: 430 435. Let’s go back to 1977!
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lecture-27-handouts - 11/29/2011 Practical Bioinformatics...

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