RESUMEN
The mitochondria of the liver celis of rats are counted following the experimerimental operalion of selective and complete bile duct obstruction. The amount of mitochondria decreases significantly aAcr complele obstruction, (in the control group it is 22.948), and after the seleclive obstruction it decreases significantly, too. This experiment suggests: in the compensatory hypertrophy of the liver the amount of mitochondria dosen't inhance.
RESUMEN
Studies of the scalps from 42 patients with alopecia areala are given,using direct immunofluorescence ( DIP).Langerhans cells (LC)and T-lyrn hocytc subsets are observed.There is no significant difference between the number of OKT6 cells and Ia+ cells in the epidermis of all groups and the control.LC is seen in hair-bulb in many patients and most frequently in active stage.The main change of LC in hair follicle is increasing of T6+Ia- cells,not significant of T6+Ia+ cells.Most of the infiltrates around the hair follicles are T( OKT3+) cells.T4+cells number and T4/T8 ratio in active arc larger than in resting and recovering stages.DIF shows 88% of the patients having deposits of C3,IgG,and IgM.This suggests that alopecia areata may be the disorder of immnue associated with cellular and humoral immunity.
RESUMEN
Pathological changes of Kupffer cells in number and ultrastructure were studied by means of colloidal carbon uptake, endogenous peroxidase cytochemistry, quantitative histology and ultrastructural stereologic morphometry at various time intervals (3,7,14,21,and 28 d) after common bile duct ligation. Kupffer cell phagocytic function and serum fibronectin opsonic activity were measured. The results show the morphological changes of Kupffer cells coinciding with their functional alterations. Alteration of Kupffer cell phagocytic function is mainly due to the changes of number and cellular activity of Kupffer cells.