Abstract
The comparative morphometry , histology and histochemistry of the submandibular, parotid and sublingual glands were studied in the wild adult African giant pouched rat (Cricetomys gambianus) and greater cane rats (Thryonomys swinderianus). The submandibular was purely serous in the giant pouched rats, but sero-mucous in the cane rats with serous acini predominating. Serous demilunes were common in the submandibular gland of cane rats but not in that of giant rats. The parotid contained serous acini in both species, in addition intermingled copious globular fat tissue was observed in the cane rats. The sublingual gland showed sero-mucous acini with mucous predominating in both rodents. Large striated (intralobular) ducts were present in the parenchyma of both rats. Strong activity of neutral mucins was observed in submandibular and parotid gland of both rodents, however acidic mucins were absent. The sublingual gland showed reactivity for neutral and acidic mucins in both rats. Gross morphometry indicated significant differences (p
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