spacer gif spacer gif spacer gif spacer gif spacer gif
QUICK SEARCH:   [advanced]


spacer gif
     Home     Help     Feedback     Subscriptions     Archive     Search     Table of Contents    

Right arrow Help viewing high resolution images
Right arrow Return to article

(Downloading may take up to 30 seconds.
If the slide opens in your browser, select File -> Save As to save it.)
Click on image to view larger version.



Fig. 1. Exogenous 8-bromo-cyclic AMP stimulates secretion of Na+-rich urine by An. gambiae Malpighian tubules. Fluid secretion and urine Na+ and K+ concentrations were initially measured over a 30 min control period and then at 10–15 min intervals after the addition of 1 mmol l–1 8-bromo-cyclic AMP. Data points show the means ± S.E.M. for five tubules. (A) Fluid secretion (solid line) and the tubule fluid [Na+]:[K+] ratio (broken line) increase after the addition of 8-bromo-cyclic AMP. (B) This reflects the selective stimulation of transepithelial Na+ transport (solid line) compared with K+ transport (broken line). Arrows show the time of addition of 8-bromo-cyclic AMP.





Right arrow Return to article