Antigens common to hosts and parasites.

CONTENTS INTRODUCTION ..... . . ...... ..... ......... .............. . . . ...... .......................... ......................... . . . ... ... 147 ANTIGEN SHARING BETWEEN MICROBES AND THEIR ANIMAL HOSTS .... ... ..... .. 148 Mycoplasma ............................................................. ....... ... ............... ........ ... ......... .. .. 148 Bacteria ............................................................ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 50 Protozoa ............................................................................ ........................................ 1 53 Helminths .................................................................................................................. 1 53 ROLE OF AGGLUTININS (LECTINS) IN HOST·PARASITE INTERACTIONS ..... ......... 1 54 ANTIGEN SHARING BETWEEN PLANT HOSTS AND PARASITES .................. ... ... ... . 155 Bacteria .................................................................................................................... 156 Fungi ........................................................................................................................ 1 59 Nematodes ... ............................................................................................................. 162 IMMUNE SYSTEMS IN PLANTS ...... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 162 CONCLUDING REMARKS ............................. .... ........................ ........ . ......... ..... ... ........... 164