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Fig. 5 | SpringerPlus

Fig. 5

From: Effect of dietary histamine supplementation on growth, digestive enzyme activities and morphology of intestine and hepatopancreas in the Chinese mitten crab Eriocheir sinensis

Fig. 5

Histological observations of intestinal bulb from Chinese mitten crab fed with diet containing histamine after 28 days. a Longitudinal section of intestinal bulb showing the gross structure in the control (arrow). b The basophilic nucleus were visible in the intestinal bulb in the control (arrow). c Adjacent to the intestinal bulb, a reticular appearance and reserve inclusion cells were present (arrow). d, e Basophilic nucleus were hardly visible and reserve inclusion cells were fewer in 1 g/kg histamine treatments (arrow). f, g The number of basophilic nucleus and reserve inclusion cells increased in 2 g/kg histamine treatments (arrow). h, i The number of basophilic nucleus increased and reserve inclusion cells decreased in 4 g/kg histamine treatments (arrow)

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