Distribution of cholecystokinin-immunoreactive cells in the digestive tract of the larval teleost, ayu, Plecoglossus altivelis.

Abstract

The ontogenetic development of cholecystokinin-immunoreactive (CCK-IR) cells was studied in larval ayu, Plecoglossus altivelis. This species has a straight digestive tract during the larval phase. CCK-IR cells were present in all the larvae from the day of hatching (0 days after hatching, DAH). An immunoreaction to anti-trypsinogen antibody was also… (More)

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