cGMPµM

cGMP_in pmol/10⁷cells

cGMP_ex/in

0

5.3 ± 0.8

1.4 ± 0.3

10

7.4 ± 1.3

7.5 ± 2.2

100

44 ± 11

35 ± 5.2

1000

195 ± 19

50 ± 4.9