IMMUNE RESPONSE IN COLD EXPOSURE 



response, and the function of the antibody as a protein com- 

 ponent of the serum. These two things may not be exactly the 

 same, and I think that there has been in the past an assumption 

 that we are measuring these two things simultaneously in some 

 of the studies reported. It occurred to me that it might be possible 

 to distinguish these two separate physiological functions in some 

 way. 



NORTHEY: In terms of the comments about protein metabolism, 

 one can't say an animal eats more and therefore produces more 

 antibody. The antigenisticity of the substance under investi- 

 gation makes a difference in probably a multitude of other fac- 

 tors. 



CAMPBELL: That is why I was bringing up this last point; 

 the persistence in antigens. 



133 



