ANATOMY OF THE PITUITARY BODY 



among different animals but remained fairly constant in a 

 given species. He found more basophils in man, the pig, and 

 the horse than in ruminants and birds. According to Beato 

 (1935) no basophils are to be found in the pars glandularis of 

 the sheep; but, contrary to the findings of others, Beato also 

 found almost none in the ox gland. 



Some of the quantitative studies which have been made are 

 given in Table III. The differences in the results of different 

 workers undoubtedly are partly of technical origin. Probably 

 there are fewer oxyphils in the female rat's pituitary than in 



TABLE HI 



The Percentage of Different Types of Cells in the Pars Glandularis 



the male's. Rasmussen's comparisons between men and 

 women were made by a uniform technique. In women, in 

 comparison with men, the proportion of oxyphils was signifi- 

 cantly higher, whereas that of basophils was significantly 

 lower. He found that the relative number of reserve cells in- 

 creased by about 4 per cent in both men and women more 

 than fifty years old; in women the proportion of basophils 

 also increased by 2 per cent. The changes in both sexes oc- 

 curred at the expense of the oxyphils. 



Other aspects of the microscopic anatomy of the pars glandu- 

 laris. — xAs a rule, relatively few mitotic figures can be found 

 in the pars glandularis (De Beer, 1926). In the rabbit they 

 are found chiefly in the oxyphils (Majima, 1926). 



