Role of the Lymphocyte in Inflammation 75 



At 6 hours (Fig. 6-3) the neutrophils are the most numerous of the 

 exudate cells. They appear somewhat smaller and show varying signs of 

 degeneration. The lymphocytes constitute about \/ 3 to i/ 4 of the exudate 



Fig. 6-3. Two small lympho- 

 cytes and six neutrophils in the 

 lesion of a control subject in 

 the sixth hour of inflamma- 

 tion, (x 900) 



cells. The majority are small lymphocytes and range from 7 to 11 p in 

 diameter. 



At 9 hours (Fig. 6-4) the lymphocytes constituted somewhat less than 

 50 per cent of the cells. Their nuclear pattern showed a slight increase in 

 parachromatin and an irregular outline of the nuclear membrane, often 



t/ P <> f%e 





V. ^r *'** 



Fig. 6-4. Six lymphocytes and 

 numerous neutrophils from a le- 

 sion similar to that in Fig. 6-3; 

 in the ninth hour of inflamma- 

 tion in man. (X 900) 



with a cytocentric ridge or indentation. The cytoplasmic membranes were 

 irregular in outline, probably because they were fixed in a state of ameboid 

 motion. 



At 12 hours (Fig. 6-5) the majority of the exudate cells were Lymphocytes. 

 The neutrophils had degenerated further, many of them measured 6 to 



