Timeline image credits

Pre 20th Mosquito

1900s Cornea

eye sick cataract: iStock_07875512©Micheline Dubé

1910s Blood bag: iStockphoto 3739350/

1920s Needle

1930s Connected red drops

1940s Penicillin: Wellcome images / N0013876

1950s Thermometer: Wellcome Images / C0016130

1960s Heart trace

1970s Asthma inhaler: iStockphoto 3241516/RMAX

1980s Pregnant women: http://commons.wikimedia.org/wiki/File:Pregnancy_26_weeks_1.jpg

http://www.flickr.com/photos/inferis/74807157/

1990s Purple breast scan

2000s Monoclonal antibodies

2010s Blue helix