Fig. 1. Influence of pulmonary pressure on lymph sac pressures. Changes in dorsal,
lateral and subvertebral lymph sac pressure as a function of pulmonary
pressure in anesthetized C. marinus (left column) and L.
catesbeiana (right column). All relationships were highly significant
(P<0.001, N=11; linear regression) with
r2 ranging from 0.19 to 0.72.