142M471B3J 3 7440-44-0 3 CO2 efflux 3 Carbon 3 Carbon Dioxide 3 Journal Article 3 Research Support, U.S. Gov't, Non-P.H.S. 3 mehr ... internally transported CO2 xylem-transported CO2 3 Brassica napus 2 Populus deltoides 2 Research Support, Non-U.S. Gov't 2 stem [CO2*] 2 tunable diode laser absorption spectroscopy 2 Amaranthus hypochondriacus 1 C4 photosynthesis 1 Kranz anatomy 1 Research Support, N.I.H., Extramural 1 carbon cycle 1 leaf photosynthesis models 1 leaf respiration 1 terrestrial carbon sink 1 tunable diode laser absorbance spectroscopy 1 weniger ...