208 ROBERT K. S. LIM 



Human . — The pyloric cells of man resemble those of the 

 cat in everj'^ respect except that they are longer and stain more 

 lightly. Sufficient material was not available from which 

 measurements of the cardiac and pyloric regions could be made. 



Dog. — There are no pure cardiac glands in the dog. Oxyntic 

 cells may be found at the cardio-oesophageal junction along 

 both curvatures, while peptic cells are present within 2-3 nnn. 

 of the junction. In this small zone the cells are longer but 

 otherwise show the same features as those of the cat. Kace- 

 mose glands are very constantly present ; they extend fron) 

 the oesophagus into the cardia under the muscularis mucosae. 

 Their acini are mucous with a few serous crescents here and 

 there. They are thus not to be considered as cardiac glands, 

 but as part of the salivary apparatus which occurs abundantly 

 in the mucosa of the oesophagus. 



The pyloric region extends for about 40 mm. along the greater 

 curvature and 45 mm. along the lesser. The boundary zone 

 bearing full-sized oxyntic cells and pyloric cells occupies only 

 about 2 mm., but small (primitive) oxyntic cells may be 

 observed especially at the neck of the glands within 20-5 mm. 

 of the pylorus. The cells, like the cardiac group, resemble 

 those of the cat — the red-stainiiig reticulum being more 

 constantly present ; this is best seen in those near the 

 duodenum. 



Eabbit. — There are few cardiac glands corresponding to 

 those seen in the cat. These usually occur along the lesser 

 curvature, occupying a small zone of about 2 mm. distal to 

 the oesophagus. Along the greater curvature and sometimes 

 along both curvatures oxyntic cells may be found right up to 

 the cardio-oesophageal junction. When the cardiac glands 

 are present the cells which form them are not typical. They 

 onlj^ show a faint mucoid reaction near the surface ; elsewhere 

 the cytoplasm is both granular and reticular, and stains reddish 

 with Mallory. The condition appears to be an exaggeration 

 of the ' red reticulum ' seen in the cat and other animals. 

 In addition to this peculiarity glands of the racemose type are 

 also met with under the muscularis mucosae. Thev extend 



