Pictography

http://www.nps.k12.nj.us/science/Kelly%20Chem%20Webpage!/images/pasteu32.jpg
http://ebooks.adelaide.edu.au/p/pasteur/louis/portrait.jpg
http://image.absoluteastronomy.com/images/encyclopediaimages/t/ta/tableau_louis_pasteur.jpg
http://openlearn.open.ac.uk/file.php/2642/S320_1_004i.jpg
http://data360.files.wordpress.com/2009/02/news_times_logo.jpg
http://www.nps.k12.nj.us/science/Kelly%20Chem%20Webpage!/images/pasteu32.jpg
http://mediaplayer.group.cam.ac.uk/ASSETS/images/CUSP-Movies05-Germs/CUSP-Movies05-Germs___a_GERMS.jpg
http://chattahbox.com/images/2009/03/vaccine.jpg
http://static.howstuffworks.com/gif/vaccine-7.jpg
http://decideforyourself.files.wordpress.com/2008/05/milk_325.jpg