Heterogeneous localization of adenylate and guanylate cyclases in R3230AC rat mammary adenocarcinoma cells.


Adenylate and guanylate cyclase activities were demonstrated in R3230AC rat mammary adenocarcinomas by electron microscopic cytochemistry. Adenylate (AC) and guanylate (GC) cyclases were detected on plasma membrane of tumor epithelial cells, but not on fibroblasts and endothelial cells in the perivascular space. Both AC and GC activities were enriched in… (More)


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