Page 43 - MNU-PM503 Parasitology practical book
P. 43

Pharm D- Clinical Pharmacy Program                    Third Level                Parasitology and virology (PM503)


                                      1- Intestinal nematode Ascaris lumbricoides



                     Fertilized egg :


                      Broad oval.

                      Size: 60X45 u.

                      Yellowish-brown in colour.


                      Thick-shelled with regular albuminous
                          mammillations.


                      Immature (contains large single cell stage
                          embryo).




























                   Definitive host                  -        Man.


                   Infective stage                  -    Egg containing a second stage rhabditiform larva

                   Mode of infection                -  Ingestion  of  mature  eggs  containing  2nd  stage
                                                       rhabditiform  larva,  contaminating  food  (green  raw

                                                       vegetables), water or hands.
                                                    -  Inhalation of mature eggs to the nasopharynx..


                                                                 37
   38   39   40   41   42   43   44   45   46   47   48