1. Preservation with 8-bromo-cyclic GMP improves pulmonary function after prolonged ischemia 
Robert C King, MD, Victor E Laubach, PhD, R.Chai Kanithanon, BA, Adam M Kron, Patrick E Parrino, MD, Kimberly S Shockey, MS, Curtis G Tribble, MD, Irving L Kron, MD 
The Annals of Thoracic Surgery 
Volume 66, Issue 5, Pages (November 1998)
DOI: /S (98)

2. Fig 1
Pulmonary artery pressures for the four experimental groups during 30 minutes of reperfusion: group 1 = immediate control (); group 2 = 18-hour control (■); group 3 = cyclic guanosine monophosphate analogue (cGMP) treatment and 18-hour storage (▴); and group 4, cGMP treatment and 30-hour storage (▾).
The Annals of Thoracic Surgery  , DOI: ( /S (98) )

3. Fig 2
Pulmonary venous–arterial oxygen gradients for the four experimental groups at 10, 20, and 30 minutes of reperfusion: group 1 = immediate control (□); group 2 = 18 hour control (■); group 3 = cyclic guanosine monophosphate analogue (cGMP) treatment and 18-hour storage (▤); and group 4 = cGMP treatment and 30-hour storage ().
The Annals of Thoracic Surgery  , DOI: ( /S (98) )