PLATELETS— VILLALOBOS, ADELSON and RILEY 



189 



TABLE \T 



Aorta blood 



Platelets WBC 



Temp. ° C. (per cu. mm.) (per cu. mm.) 



Z1 177,000 8.900 



25 8L000 3,203 



20 20,000 L900 



Low inferior vena cava 



Platelets WBC 



(per cu. mm.) (per cu. mm.) 



218,000 

 90,500 

 30,000 



9,700 

 3,600 

 1,800 



TABLE VII 



Aorta blood 



Platelets WBC 



Temp. ° C. (per cu. mm) (per cu. mm.) 



Zl 299,500 15,000 



25 123,000 8,600 



20 48,500 8,000 



Low inferior vena cava 



TABLE VIII 



37 



[Aorta 316,000 



Platelets (per cu. mm.) •< Low inferior vena cava... 356,000 



[Hepatic vein 247,000 



TAorta 13,200 



White blood cells (per cu. mm.)-i Low inferior vena cava. . . 12,200 



[Hepatic vein 6,800 



Temp. ° C. 



TABLE IX 



Temp. 



37 25 20 25 



f Aorta 374,000 91,000 48.000 177,000 



Platelets (per cu. imn.) J Low inf. vena cava.. 336.000 108.000 42.500 199.500 



[Hepatic vein 363,000 74.500 30,000 201,000 



,,-, . , , , „ (Aorta 7,000 ' 2,600 1,400 2,300 



u me Diooa cells J Low inf. vena cava. . 5.900 3.000 1.800 3,700 



^percu.mm.; [Hepatic vein 6.000 2,000 1,200 3,900 



30 



163,500 

 226,500 

 189,000 



3.800 

 5,000 

 5,500 



aorta, low inferior vena cava, and hepatic vein. Here it can be seen that the hepatic 

 vein leads the other samples in the platelet drop. This is further proof that the site 

 of sequestration lies somewhere in the portal circulation. In taljle IX, a similar 

 result is seen. In addition, this shows the hepatic vein leading the other samples in 

 the platelet rise. In table X the results of platelet counts in the aorta, low inferior 

 vena cava, portal vein just inferior to the liver, and hepatic vein are compared. In 

 this animal, the portal vein and hepatic vein samples both lead the platelet drop and 

 the platelet rise. This would seem to indicate that the liver cannot be the oyily site 

 of platelet sequestration. However, the fact that the hepatic vein counts are lower 

 on the way down and higher on the way up than the portal vein platelet counts 

 seems to indicate that the liver does play a considerable role in these changes. In 

 tables XI and XII are shown the results of splenectomy on the hematologic changes 

 in hypothermia. In neither animal was the platelet drop or white cell drop signifi- 



