we have studied the variations of endogenous cyclic amp levels in thyroid cells cultured over a period of 7 days in several conditions : in the presence of thyroid-stimulating hormone or dibutyryl cyclic amp which both promote the aggregation of isolated cells into follicles , and in their absence when cells develop as a typical monolayer .
C0001455
cyclic amp
C0012054
dibutyryl cyclic amp