SUMMARY:We have characterized primary rabbit kidney proximal tubule cells grown on Millipore cellulose fihers (Millicell-HA) in which the cells are exposed to culture medium on both the apical and basolateral sides. Cells reach confluency 12 to 14 d after plating. Methods are described for removal of the cells from the filters and measurement of the integrity of the monolayer at confluency by exclusion of [laC]inulin.
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