1. Nation Master. "Encyclopedia:Lactobacillus Acidophilus." NationMaster.com. 2005.

     Nation Master. 7 Dec. 2008 <http://www.nationmaster.com/encyclopedia/

     Lactobacillus-acidophilus>.

2. Turner, Judith. "Acidophilus Health Article ." Health Line. 2008. Gale Group. 5

     Dec. 2008 <http://www.healthline.com/galecontent/

     acidophilus?utm_medium=ask&utm_source=smart&utm_campaign=article_alt&utm_term=lac

     tobacillus+acidophilus&ask_return=Acidophilus> 

3. “lactobacillus.“ Encyclopædia Britannica. 2007. Encyclopædia Britannica Online School Edition. 7 Dec. 2007  <http://school.eb.com/eb/article-9046772>.

4. Medical . Dept. home page. 2007. University of Maryland . 7 Dec. 2008

     <http://www.umm.edu/altmed/articles/lactobacillus-000310.htm>.

5. Wikipedia. "Lactobacillus acidophilus." Wikipedia. 8 Dec. 2008. Wikimedia

     Foundation, Inc. 14 Dec. 2008 <http://http://en.wikipedia.org/wiki/

     Lactobacillus_acidophilus>.

6. Wikipedia. "Bacilli" Wikipedia. 8 Dec. 2008. Wikimedia

     Foundation, Inc. 14 Dec. 2008 <http://en.wikipedia.org/wiki/Bacilli>.

7. Wikipedia. "Firmicutes" Wikipedia. 8 Dec. 2008. Wikimedia

     Foundation, Inc. 14 Dec. 2008 <http://en.wikipedia.org/wiki/Firmicutes>.

8. MicrobiologyBytes. "Gram Stain." MicrobiologyBytes. MicrobiologyBytes, Inc. 14

     Dec. 2008 <http://http://www.microbiologybytes.com/video/Gram.html>.