ON THE FORMATION OF SPECIFIC ANTI-BODIES 
IN THE BLOOD, FOLLOWING UPON 
TREATMENT WITH THE SERA 
OF DIFFERENT ANIMALS. 
GEORGE H. F. NUTTALL. 
E o si years which have elapsed since I 
blood, iraia erigere: er bactericidal properties 1n the 
discovered relati pei fluids, a great deal has been 
experiments ref pae other propere of the blood. The 
Which” led to visae to directly stimulated the researches 
agglutinative, h : wai pone: a ipe: shes ot dnt 
serum. We k æmolytic, and cellulicidal properties in blood 
ber of bodi Av a. learnt of the existence of a num- 
ies which neutralize the action of these various 
substances. 
coil or specific bodies or pre 
certain Tm I isis of animals treate 
dde acteria, with various kinds of mil 
time and different kinds of blood. 
Nein. T d the first to demonstrate the exisrence of 
cic precipitins in the blood serum of animals immunified 
against cholera, typhoid, and plague. His results were subse 
E onfirmed by Nicolle and Marmorek. i 
dt hé e various anti-sera were added to clear culture fitr? 
in th coin: bacterium, and a precipitum was seen to occur 
Ms Itrates of those cultures only to which the homologous 
“serum was added. Scr dn 
cma first demonstrated the existence of specific vieron 
se ` He treated animals with MEE After a ie E 
Es that their serum when added to 8 milk dilution brought 
k ki is precipitation. A precipitum was formed only sien 
anti-serum was added to the particular milk against w " 
927 
cipitins have been seen 
d with the products of 
k, with peptone, egg 
