incubation of vsmc with 10 ( -8 ) m 1,25 ( oh ) 2d3 , but not 25 ( oh ) d3 , in the presence of 10 % fcs for up to three weeks caused rapid reversible appearance in the cytoplasm of membrane-bounded electron-dense lysosomal particles which on electronspectroscopic imaging contained ca and pi .
C0230812
the
C0010834
cytoplasm