four rat lipoprotein classes [ lymph chylomicrons , vld ( very-low-density ) , ld ( low-density ) and hd ( high-density ) lipoproteins ] were tested for their ability to affect basal adenylate cyclase ( ec 4.6.1.1 ) activity of rat liver plasma membranes .
C0023820
lipoprotein
C0008731
chylomicrons