CONTENTS 



PAGE 



6. THE parasite's METHOD OF ATTACK . . . 3I 



7. CHANGES IN THE HOST CAUSED BY THE PARA- 



SITE 32 



(i) Symptomatology 33 



(2) Pathogenesis 34 



(3) Immunology 35 



8. changes in the parasite due to residence 



IN the host 35 



(i) Immunology 35 



(2) Aggressivity 36 



9. host-parasite adjustments during an in- 



fection 36 



(i) Carriers 36 



(2) Latency 38 



(3) Relapse 38 



10. therapeutics 38 



(i) Biological Therapy 39 



(2) Chemotherapy 39 



11. route taken by parasites in escaping from 



the host 41 



III. Host-Parasite Specificity 42 



1. host susceptibility 42 



2. parasite infectivity 43 



3. some problems in host-parasite specificity 



among intestinal, protozoa .... 45 



IV. Problems in Host-Parasite Relations among Intes- 



tinal Protozoa . » ., 52 



CHAPTER II 



INTESTINAL AMCEB^ 56 



I. Generic Characteristics 56 



1. endamceba 56 



2. endolimax 57 



3. iodamceba , . . 57 



4. dientamceba 57 



II. Specific Characteristics . . . 58 



1. endamceba histolytica ....... 58 



2. endamceba coli 61 



3. endamceba gingivalis 62 



X 



