http://www2.davidson.edu/its/instruct/in_docview.aspx?id=587 mailto:dawessner@davidson.edu http://bio.davidson.edu http://www.davidson.edu http://www.dpd.cdc.gov/DPDx/HTML/ImageLibrary/Pneumocystis_il.htm http://www.cdc.gov/ncidod/dpd/parasites/pneumocystis/