44© 



INANITION AND MALNUTRITION 



The effects of inanition upon the structure of the thyroid gland in young 

 albino rats are shown by a comparison of Fig. 113 (normal at 22 days) with 

 Fig. 114 (condition in a rat underfed from 3 to 10 weeks of age). 



Fig. 113. — A small portion of a section from the thyroid gland in a normal albino rat 

 (S. 9.47) 22 days old. Zenker fixation; hematoxylin-eosin stain. X750. The normal 

 histological structure is shown, with several follicles containing colloid. Follicular epithelium 

 cuboidal; cytoplasm abundant and granular, with a few scattered vacuoles. The fibrous 

 stroma is scanty, with a rich blood-vascular plexus. (Jackson '16.) 



McCarrison ('21) observed a marked decrease in the weight of the thyroid 

 gland in starved pigeons, though relatively less than that in the whole body 

 (Fig. 35). 



Trowbridge, Moulton and Haigh ('18) and Moulton, Trowbridge and Haigh 

 ('22a) concluded that in steers the thyroid ("neck sweetbread") is somewhat 

 reduced in weight in the poorly nourished. 



Okuneff ('22) in the thyroid gland of the rabbit found the fatty cell granules 

 small and scarce, but (confirming Traina '04) unchanged during inanition with 

 loss of 30-40 per cent in body weight. 



