effects on ca2+ transport of parathyroid hormone ( pth ) and n6 , o2'-dibutyryl adenosine 3',5'-cyclic monophosphate ( db-camp ) were examined in the rabbit distal nephron segments including the cortical thick ascending limb of henle 's loop ( cal ) , the connecting tubule ( cnt ) and the cortical collecting tubule ( cct ) by the in vitro perfusion technique .
C0027713
nephron
C0227658
ascending limb of henle 's