viii CONTENTS 



PAGB 



OTHER APPLICATIONS OF THE PRECIPITIN TEST . . 117 



ANTIPRECIPITINS ISOPRECIPITINS . ... ....... 118 



Cytotoxins 119 



DEFINITION, LEUCOTOXIN NATURE OF THE CYTOTOXIN 



ANTICYTOTOXIN 119 



NEUROTOXIN 120 



SPERMOTOXIN 121 



COMMON RECEPTORS. 122 



CYTOTOXIN FOR EPITHELIUM 122 



CYTOTOXINS BY THE USE OF NUCLEOPROTEIDS ... 123 



Opsonins 125 



HISTORICAL. . ...... 125 



BACTERIOTROPIC SUBSTANCES 127 



OPSONINS DISTINCT ANTIBODIES . . . 128 



STRUCTURE OF OPSONINS ..... 128 



THE OPSONIC INDEX 128 



TECHNIQUE 129 



VALUE OF THE OPSONIC MEASUREMENTS 132 



Snake Venoms and their Antisera ........ 135 



THE VENOMS . . . . , 135 



ANTIVENINS 137 



Serum Sickness 138 



DEFINITION. . . . . 138 



DUE TO SERUM AS SUCH 139 



VON PlRQUET AND SCHICK'S THEORY ,, 140 



ANAPHYLAXIS ..................... 142 



THE CONCENTRATION AND PURIFICATION OF ANTITOXIC 



SERA 145 



Appendices , 147 



A SERUM DIAGNOSIS OF SYPHILIS 147 



B. NOGUCHI'S BUTYRIC ACID TEST 164 



