control and fluoride ( 5 mm ) stimulated adenvlate cyclase activities were measured in the following segments of the nephron : early proximal convoluted tubule ( pct ) , pars recta of the proximal tubule ( pr ) , thin descending limb of the loop ( tdl ) , cortical portion of the thick ascending limb ( cal ) , distal convoluted tubule ( dct ) , first branched portion of the collecting tubule ( bct ) , further cortical ( cct ) and medullary ( mct ) portions of the collecting tubule .
C0027713
nephron
C0022676
distal convoluted tubule