http://helios.bto.ed.ac.uk/bto/microbes/Penicillin

www.emea.eu.int

www.schoolscience.co.uk

www.the-shipman-inquiry.org.uk

http://inventors.about.com

www.chemsoc.org

www.chemheritage.org

www.patenthealthinternational.com

www.aspirin.com

www.drug-monitoring.com

www.centerwatch.compatient/backgrnd.html#Section1

www.mca.gov.uk/

www.mhra.gov.uk/

www.medicines.mhra.gov.uk/ourwork/licensingmeds/types/marketauth.htm

www.bbc.co.uk

www.aspirin.org/history.html

www.medinfo.co.uk/drugs/aspirin.html

www.aspirin-foundation.com/what/index.htm

www.lung.ca/antibiotics/

www.olemiss.edu/courses/phcy201/cdh2.htm

www.darwin.wcupa.edu/b515site/gskochko/AV_Res33_inhibit_exs.htm

www.chclibrary.org/micromed/00038150.html

www.medhelp.org/glossary2/new/GLS_0379.HTM

www.immunecentral.com/infotemplate.cfm-1072-72-1

www.users.rcn.com/jkimball.ma.ultranet/BiologyPages/V/Vaccines.html

www.healthatoz.com/healthatoz/Atoz/ency/antiseptics.isp

www.history1900s.about.com/library/weekly/aa062801a.htm

www.dietitian.com/vitamins.html

www.student.city.ac.uk/~rc313/vitamins.html

www.pfizer.co.uk

www.centerwatch.com/patient/backgrnd.html#Section1

www.abpischools.org.uk/resources/manufacturing/manufch1pg1.asp

www.familydoctor.org/262.xml

www.intelihealth.com/IH/ihtIH/WSIHW000/7945/32106/351606.html?d=dmtContent

www.healthatoz.com/healthatoz/Atoz/ency/antihypertensive_drugs.jsp#top

www.astrazeneca.com

www.medbroadcast.com

www.healthsquare.com

www.en.wikipedia.org

www.dentistry.com/pdentalupdates_04.asp

www.rxlist.com

www.chemicalland21.com

.