Postprandial changes of renal blood flow. Studies on conscious dogs on a high and low sodium intake.

Postprandial renal blood flow was studied in 14 conscious dogs on a chronic high and low sodium intake on 72 days after implantation of an electromagnetic flow transducer around the left renal artery. Fasting renal blood flow was 11.7 plus or minus 3.

Stomatal responses to changes in atmospheric humidity and water supply: Experiments with leaf sections of Zea mays in CO2-free air.

Leaf sections were exposed to CO2-free air, thus excluding interference by the CO2-sensitive system in the guard cells. Stomates did not close in response to change from moist to dry air, whether it passed over the leaf or was forced through the intercelluar spaces. In contrast, the stomatal apertures became narrower if the water potential in the liquid supplying the leaf was lowered.