94 



THE TISSUES 



Fat first appears as minute droplets in the cytoplasm of the em- 

 bryonic connective-tissue cell (Fig. 40). These small droplets in- 









I 



PIT .:'f £- ->^ *- 



Fig. 39. — Developing Fat Tissue from Subcutaneous Tissue of Five-inch Foeta 

 Pig- X75. (Technic 12, p. loi.) a, Arteriole breaking up into capillary network; b 

 embryonal connective tissue; c, embryonal fat lobule developing around blood-vessels 



• • • 



■■»■■•■•- 



Fig. 40. — Developing Fat Tissue from Subcutaneous Tissue of Five-inch Foetal 

 Pig. (Technic 12, p. loi.) a, Arteriole breaking up into capillary network; b, embryonal 

 connective tissue, embrj-onal cells from which fat cells are developing; c, capillaries. 

 Fat droplets stained black. At the right are five individual cells showing stages of 

 development from an embryonal cell to an adult fat cell. 



crease in number and finally coalesce to form a single larger droplet. 

 This increases in size and ultimately almost wholly replaces the cyto- 



