THE PITUITARY BODY 



but not in that of the albino rat (Lehmann, 1928; Parhon and 

 Caraman, 1930). 



The pars tuberalis. — Little is known about the physiologic 

 significance, if any, of the pars tuberaHs. Anatomically it 

 consists of glandlike cells arranged in acini which have no dis- 



FiG. 9. — Photomicrograph of the pars tuberalis of the moni<ey [Macaca mulatta). 

 Haematoxylin and eosin. X 1,290. 



tinct lumen (often in the ox) or may be distended with colloid 

 (cat) (Atwell and Marinus, 1918; Atwell, 1929). 



A photomicrograph of the pars tuberalis of the monkey is 

 reproduced in Figure 9. Morphologically the cells of the pars 

 tuberalis are different from those of any other part of the 

 pituitary. Usually they are described as being relatively non- 

 granular, faintly basophilic cells which appear to be colloid- 

 secreting in some animals like the cat. Pietsch (1930) found 

 some oxyphils and basophils in the human pars tuberalis, but 



[18] 



