SUBJECT INDEX 



629 



Pneumonia — Cont ' d 



results of serum treatment of, 28C 

 route of infection in lobar, 77, 78 

 stage of engorgement in, 54 

 types in lobar and bronchopneu- 

 monia, 284, 285 

 Poliomyelitis, active immunization 

 for, 292 

 antibodies and immunity to, in 



monkeys, 110 

 use of convalescent serum in, 291, 

 292 

 Pollen count, Blackley's picmeer 

 work, 565 

 exciting agents, 575, 57(5 

 Pollen extract, preparation of, 576 

 standardizing of, 576 

 unit of, 575 

 extracting fluid for, 576 

 Polypeptide, hapten nature of, 367 

 Polypliyletic theory, 91 

 Polysaccharides, bacterial, 354 



chemistry of pneumococcal, 356-358 

 Forssman's antigen and, 153 

 O and Vi content of, 363 

 pneumococcal, 195 

 Shigella dysenteriae fractious of, 



364 

 synthetic as haptens, 360, 361 

 tubercle bacilli and, 354 

 Populations, variation in susceptibles 



in, 255 

 Portal of entry into body, 47 

 Portals of infection, 75 

 Position isomers, specificity and, 340 

 PPD, chemical nature of, 509 



surveys with, 521 

 Precipitates, solubility of, 593 

 Precipitation, Bordet's theory of, 200 

 Heidelberger and Kabat's theory 



of, 200 

 theories of, 199, 200 

 Precipitin reaction, tuberculin and, 

 354 

 serum, titration of, after Nuttall, 

 227, 228 

 after Uhlenhuth, 227 

 test, biological relationships and, 

 223 

 Cannon's technique, 229 

 early application of, 223, 225 



investigations, 223 

 effect of pH on, 233 

 of salts on, 233 

 of thiocyanates on, 233 

 estimation of haptens and pro- 

 teins with. 232 



Precipitin test — Cont 'd 



iniiibition of, by tuberculin, 530 

 introduction of cholesterol, 444 

 Nuttall 's optimum proportions, 



228, 230 

 range of specificity, 229 

 reasons for diluting antisera, 235 

 syphilis and, 444-4(i8 

 unit of Dean and Webb, 232 

 use of, in determining antigenic 

 specificity, 225 

 Precipitinogen, definition of, 222 

 Precipitins, 222-241 



bacteria vs. animal proteins, 224 

 Cannon's method of titrating, 201, 



229 

 coexistence of antigens and anti- 

 bodies in blood, 311, 313 

 definition of, 151, 208, 222 

 discovery of, 222 

 effect of heat on, 224 

 Kraus' work on, 222 

 measurement of (ring test), 201 

 nature of, 224, 225 

 Nuttall 's conclusions in, 224, 225 

 optimal proportions of Dean and 



Webb, 229-232 

 prerequisites and preparation of 



sera for, 225-227 

 quantitative technique of Nuttall, 



228 

 source of precipitate, 224, 233 

 specificity of, 320 

 turtles and, 484 

 Preservation of complement, 158, 159 

 Preserved human blood, reference to 



studies on, 284 

 Primary host, effect of removal of, 49 

 stage, results of serological tests 

 in, 420 

 Programs, immunization, 117, 118 

 Protein, A and B fractions of im- 

 mune, 196 

 ucetylation of, 334 

 aliphatic groups in, 328 

 antigens in vegetable, 324 

 factors in specificity of, 325, 326 



of serum, 321 

 fractionation of, 193 

 fractions from bacteria, 41 



of normal and immune, 195, 196 

 ketone form. 327 

 nature of animal, 321, 322 

 nonspecies specific, 322, 323 

 number of compounds possible 



from amino acids, 327 

 plasma, 193 



