42 



THE ESSENTIALS OF HISTOLOGY. 



The fat when first formed is deposited within granular cells of areolar 

 tissue (fig. 45). It appears to be produced by a transformation of 



FlG. 44. A FEW CELLS FROM THE MARGIN OF A FAT-LOBULE. 



ff, fat-globule distending a fat-cell; n, nucleus; m, membranous envelope of the fat-cell; 

 c r, bunch of crystals within a fat-cell ; c, capillary vessel ; v. venule ; c t, connective- 

 tissue cell ; the fibres of the connective tissue are not represented. 



albuminous granules into droplets of fat. As these droplets increase in 

 size they run together into a larger drop, which gradually fills the cell 



J 



FIG. 45. DEPOSITION OF FAT IN CONNECTIVE- TISSUE CELLS. 



/, a ceil with a few isolated fat-droplets in its protoplasm ; /', a cell with a single large and 

 several minute drops ; /", fusion of two large drops ; g, granular cell, not yet exhibiting 

 any fat-deposition ; c t, flat connective-tissue corpuscle ; c, c, network of capillaries. 



more and more, swelling it out so that the cell-protoplasm eventually 

 appears merely as the envelope of the fat-vesicle. 



Fat is found most abundantly in subcutaneous areolar tissue, and 



