Kinetics and route of active K-transport in the isolated midgut of Hyalophora cecropia.


The isolated midgut of the Cecropia silkworm actively transports large quantities of potassium from its blood-side to its lumen (Harvey & Nedergaard, 1964). The epithelium consists of but two types of differentiated cells, columnar cells and goblet cells in a ratio of approximately 2 to 1, arranged in a one-cell-thick mosaic and resting on a thick basement… (More)

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